/**
 * Created by Daniel on 2017/12/18.
 */
/**
 * @license
 * Video.js 6.2.8 <http://videojs.com/>
 * Copyright Brightcove, Inc. <https://www.brightcove.com/>
 * Available under Apache License Version 2.0
 * <https://github.com/videojs/video.js/blob/master/LICENSE>
 *
 * Includes vtt.js <https://github.com/mozilla/vtt.js>
 * Available under Apache License Version 2.0
 * <https://github.com/mozilla/vtt.js/blob/master/LICENSE>
 */

(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
        typeof define === 'function' && define.amd ? define(factory) :
            (global.videojs = factory());
}(this, (function () {

    var version = "6.2.8";

    var commonjsGlobal = typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};





    function createCommonjsModule(fn, module) {
        return module = { exports: {} }, fn(module, module.exports), module.exports;
    }

    var win;

    if (typeof window !== "undefined") {
        win = window;
    } else if (typeof commonjsGlobal !== "undefined") {
        win = commonjsGlobal;
    } else if (typeof self !== "undefined"){
        win = self;
    } else {
        win = {};
    }

    var window_1 = win;

    var empty = {};


    var empty$1 = (Object.freeze || Object)({
        'default': empty
    });

    var minDoc = ( empty$1 && empty ) || empty$1;

    var topLevel = typeof commonjsGlobal !== 'undefined' ? commonjsGlobal :
        typeof window !== 'undefined' ? window : {};


    var doccy;

    if (typeof document !== 'undefined') {
        doccy = document;
    } else {
        doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'];

        if (!doccy) {
            doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'] = minDoc;
        }
    }

    var document_1 = doccy;

    /**
     * @file browser.js
     * @module browser
     */
    var USER_AGENT = window_1.navigator && window_1.navigator.userAgent || '';
    var webkitVersionMap = /AppleWebKit\/([\d.]+)/i.exec(USER_AGENT);
    var appleWebkitVersion = webkitVersionMap ? parseFloat(webkitVersionMap.pop()) : null;

    /*
     * Device is an iPhone
     *
     * @type {Boolean}
     * @constant
     * @private
     */
    var IS_IPAD = /iPad/i.test(USER_AGENT);

// The Facebook app's UIWebView identifies as both an iPhone and iPad, so
// to identify iPhones, we need to exclude iPads.
// http://artsy.github.io/blog/2012/10/18/the-perils-of-ios-user-agent-sniffing/
    var IS_IPHONE = /iPhone/i.test(USER_AGENT) && !IS_IPAD;
    var IS_IPOD = /iPod/i.test(USER_AGENT);
    var IS_IOS = IS_IPHONE || IS_IPAD || IS_IPOD;

    var IOS_VERSION = function () {
        var match = USER_AGENT.match(/OS (\d+)_/i);

        if (match && match[1]) {
            return match[1];
        }
        return null;
    }();

    var IS_ANDROID = /Android/i.test(USER_AGENT);
    var ANDROID_VERSION = function () {
        // This matches Android Major.Minor.Patch versions
        // ANDROID_VERSION is Major.Minor as a Number, if Minor isn't available, then only Major is returned
        var match = USER_AGENT.match(/Android (\d+)(?:\.(\d+))?(?:\.(\d+))*/i);

        if (!match) {
            return null;
        }

        var major = match[1] && parseFloat(match[1]);
        var minor = match[2] && parseFloat(match[2]);

        if (major && minor) {
            return parseFloat(match[1] + '.' + match[2]);
        } else if (major) {
            return major;
        }
        return null;
    }();

// Old Android is defined as Version older than 2.3, and requiring a webkit version of the android browser
    var IS_OLD_ANDROID = IS_ANDROID && /webkit/i.test(USER_AGENT) && ANDROID_VERSION < 2.3;
    var IS_NATIVE_ANDROID = IS_ANDROID && ANDROID_VERSION < 5 && appleWebkitVersion < 537;

    var IS_FIREFOX = /Firefox/i.test(USER_AGENT);
    var IS_EDGE = /Edge/i.test(USER_AGENT);
    var IS_CHROME = !IS_EDGE && /Chrome/i.test(USER_AGENT);
    var CHROME_VERSION = function () {
        var match = USER_AGENT.match(/Chrome\/(\d+)/);

        if (match && match[1]) {
            return parseFloat(match[1]);
        }
        return null;
    }();
    var IS_IE8 = /MSIE\s8\.0/.test(USER_AGENT);
    var IE_VERSION = function () {
        var result = /MSIE\s(\d+)\.\d/.exec(USER_AGENT);
        var version = result && parseFloat(result[1]);

        if (!version && /Trident\/7.0/i.test(USER_AGENT) && /rv:11.0/.test(USER_AGENT)) {
            // IE 11 has a different user agent string than other IE versions
            version = 11.0;
        }

        return version;
    }();

    var IS_SAFARI = /Safari/i.test(USER_AGENT) && !IS_CHROME && !IS_ANDROID && !IS_EDGE;
    var IS_ANY_SAFARI = IS_SAFARI || IS_IOS;

    var TOUCH_ENABLED = isReal() && ('ontouchstart' in window_1 || window_1.DocumentTouch && window_1.document instanceof window_1.DocumentTouch);

    var BACKGROUND_SIZE_SUPPORTED = isReal() && 'backgroundSize' in window_1.document.createElement('video').style;

    var browser = (Object.freeze || Object)({
        IS_IPAD: IS_IPAD,
        IS_IPHONE: IS_IPHONE,
        IS_IPOD: IS_IPOD,
        IS_IOS: IS_IOS,
        IOS_VERSION: IOS_VERSION,
        IS_ANDROID: IS_ANDROID,
        ANDROID_VERSION: ANDROID_VERSION,
        IS_OLD_ANDROID: IS_OLD_ANDROID,
        IS_NATIVE_ANDROID: IS_NATIVE_ANDROID,
        IS_FIREFOX: IS_FIREFOX,
        IS_EDGE: IS_EDGE,
        IS_CHROME: IS_CHROME,
        CHROME_VERSION: CHROME_VERSION,
        IS_IE8: IS_IE8,
        IE_VERSION: IE_VERSION,
        IS_SAFARI: IS_SAFARI,
        IS_ANY_SAFARI: IS_ANY_SAFARI,
        TOUCH_ENABLED: TOUCH_ENABLED,
        BACKGROUND_SIZE_SUPPORTED: BACKGROUND_SIZE_SUPPORTED
    });

    var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
        return typeof obj;
    } : function (obj) {
        return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
    };











    var classCallCheck = function (instance, Constructor) {
        if (!(instance instanceof Constructor)) {
            throw new TypeError("Cannot call a class as a function");
        }
    };











    var inherits = function (subClass, superClass) {
        if (typeof superClass !== "function" && superClass !== null) {
            throw new TypeError("Super expression must either be null or a function, not " + typeof superClass);
        }

        subClass.prototype = Object.create(superClass && superClass.prototype, {
            constructor: {
                value: subClass,
                enumerable: false,
                writable: true,
                configurable: true
            }
        });
        if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;
    };











    var possibleConstructorReturn = function (self, call) {
        if (!self) {
            throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
        }

        return call && (typeof call === "object" || typeof call === "function") ? call : self;
    };











    var taggedTemplateLiteralLoose = function (strings, raw) {
        strings.raw = raw;
        return strings;
    };

    /**
     * @file obj.js
     * @module obj
     */

    /**
     * @callback obj:EachCallback
     *
     * @param {Mixed} value
     *        The current key for the object that is being iterated over.
     *
     * @param {string} key
     *        The current key-value for object that is being iterated over
     */

    /**
     * @callback obj:ReduceCallback
     *
     * @param {Mixed} accum
     *        The value that is accumulating over the reduce loop.
     *
     * @param {Mixed} value
     *        The current key for the object that is being iterated over.
     *
     * @param {string} key
     *        The current key-value for object that is being iterated over
     *
     * @return {Mixed}
     *         The new accumulated value.
     */
    var toString = Object.prototype.toString;

    /**
     * Get the keys of an Object
     *
     * @param {Object}
     *        The Object to get the keys from
     *
     * @return {string[]}
     *         An array of the keys from the object. Returns an empty array if the
     *         object passed in was invalid or had no keys.
     *
     * @private
     */
    var keys = function keys(object) {
        return isObject(object) ? Object.keys(object) : [];
    };

    /**
     * Array-like iteration for objects.
     *
     * @param {Object} object
     *        The object to iterate over
     *
     * @param {obj:EachCallback} fn
     *        The callback function which is called for each key in the object.
     */
    function each(object, fn) {
        keys(object).forEach(function (key) {
            return fn(object[key], key);
        });
    }

    /**
     * Array-like reduce for objects.
     *
     * @param {Object} object
     *        The Object that you want to reduce.
     *
     * @param {Function} fn
     *         A callback function which is called for each key in the object. It
     *         receives the accumulated value and the per-iteration value and key
     *         as arguments.
     *
     * @param {Mixed} [initial = 0]
     *        Starting value
     *
     * @return {Mixed}
     *         The final accumulated value.
     */
    function reduce(object, fn) {
        var initial = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;

        return keys(object).reduce(function (accum, key) {
            return fn(accum, object[key], key);
        }, initial);
    }

    /**
     * Object.assign-style object shallow merge/extend.
     *
     * @param  {Object} target
     * @param  {Object} ...sources
     * @return {Object}
     */
    function assign(target) {
        for (var _len = arguments.length, sources = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
            sources[_key - 1] = arguments[_key];
        }

        if (Object.assign) {
            return Object.assign.apply(Object, [target].concat(sources));
        }

        sources.forEach(function (source) {
            if (!source) {
                return;
            }

            each(source, function (value, key) {
                target[key] = value;
            });
        });

        return target;
    }

    /**
     * Returns whether a value is an object of any kind - including DOM nodes,
     * arrays, regular expressions, etc. Not functions, though.
     *
     * This avoids the gotcha where using `typeof` on a `null` value
     * results in `'object'`.
     *
     * @param  {Object} value
     * @return {Boolean}
     */
    function isObject(value) {
        return !!value && (typeof value === 'undefined' ? 'undefined' : _typeof(value)) === 'object';
    }

    /**
     * Returns whether an object appears to be a "plain" object - that is, a
     * direct instance of `Object`.
     *
     * @param  {Object} value
     * @return {Boolean}
     */
    function isPlain(value) {
        return isObject(value) && toString.call(value) === '[object Object]' && value.constructor === Object;
    }

    /**
     * @file log.js
     * @module log
     */
    var log = void 0;

// This is the private tracking variable for logging level.
    var level = 'all';

// This is the private tracking variable for the logging history.
    var history = [];

    /**
     * Log messages to the console and history based on the type of message
     *
     * @private
     * @param  {string} type
     *         The name of the console method to use.
     *
     * @param  {Array} args
     *         The arguments to be passed to the matching console method.
     *
     * @param  {boolean} [stringify]
     *         By default, only old IEs should get console argument stringification,
     *         but this is exposed as a parameter to facilitate testing.
     */
    var logByType = function logByType(type, args) {
        var stringify = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : !!IE_VERSION && IE_VERSION < 11;

        var lvl = log.levels[level];
        var lvlRegExp = new RegExp('^(' + lvl + ')$');

        if (type !== 'log') {

            // Add the type to the front of the message when it's not "log".
            args.unshift(type.toUpperCase() + ':');
        }

        // Add a clone of the args at this point to history.
        if (history) {
            history.push([].concat(args));
        }

        // Add console prefix after adding to history.
        args.unshift('VIDEOJS:');

        // If there's no console then don't try to output messages, but they will
        // still be stored in history.
        //
        // Was setting these once outside of this function, but containing them
        // in the function makes it easier to test cases where console doesn't exist
        // when the module is executed.
        var fn = window_1.console && window_1.console[type];

        // Bail out if there's no console or if this type is not allowed by the
        // current logging level.
        if (!fn || !lvl || !lvlRegExp.test(type)) {
            return;
        }

        // IEs previous to 11 log objects uselessly as "[object Object]"; so, JSONify
        // objects and arrays for those less-capable browsers.
        if (stringify) {
            args = args.map(function (a) {
                if (isObject(a) || Array.isArray(a)) {
                    try {
                        return JSON.stringify(a);
                    } catch (x) {
                        return String(a);
                    }
                }

                // Cast to string before joining, so we get null and undefined explicitly
                // included in output (as we would in a modern console).
                return String(a);
            }).join(' ');
        }

        // Old IE versions do not allow .apply() for console methods (they are
        // reported as objects rather than functions).
        if (!fn.apply) {
            fn(args);
        } else {
            fn[Array.isArray(args) ? 'apply' : 'call'](window_1.console, args);
        }
    };

    /**
     * Logs plain debug messages. Similar to `console.log`.
     *
     * @class
     * @param    {Mixed[]} args
     *           One or more messages or objects that should be logged.
     */
    log = function log() {
        for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
            args[_key] = arguments[_key];
        }

        logByType('log', args);
    };

    /**
     * Enumeration of available logging levels, where the keys are the level names
     * and the values are `|`-separated strings containing logging methods allowed
     * in that logging level. These strings are used to create a regular expression
     * matching the function name being called.
     *
     * Levels provided by video.js are:
     *
     * - `off`: Matches no calls. Any value that can be cast to `false` will have
     *   this effect. The most restrictive.
     * - `all` (default): Matches only Video.js-provided functions (`log`,
     *   `log.warn`, and `log.error`).
     * - `warn`: Matches `log.warn` and `log.error` calls.
     * - `error`: Matches only `log.error` calls.
     *
     * @type {Object}
     */
    log.levels = {
        all: 'log|warn|error',
        error: 'error',
        off: '',
        warn: 'warn|error',
        DEFAULT: level
    };

    /**
     * Get or set the current logging level. If a string matching a key from
     * {@link log.levels} is provided, acts as a setter. Regardless of argument,
     * returns the current logging level.
     *
     * @param  {string} [lvl]
     *         Pass to set a new logging level.
     *
     * @return {string}
     *         The current logging level.
     */
    log.level = function (lvl) {
        if (typeof lvl === 'string') {
            if (!log.levels.hasOwnProperty(lvl)) {
                throw new Error('"' + lvl + '" in not a valid log level');
            }
            level = lvl;
        }
        return level;
    };

    /**
     * Returns an array containing everything that has been logged to the history.
     *
     * This array is a shallow clone of the internal history record. However, its
     * contents are _not_ cloned; so, mutating objects inside this array will
     * mutate them in history.
     *
     * @return {Array}
     */
    log.history = function () {
        return history ? [].concat(history) : [];
    };

    /**
     * Clears the internal history tracking, but does not prevent further history
     * tracking.
     */
    log.history.clear = function () {
        if (history) {
            history.length = 0;
        }
    };

    /**
     * Disable history tracking if it is currently enabled.
     */
    log.history.disable = function () {
        if (history !== null) {
            history.length = 0;
            history = null;
        }
    };

    /**
     * Enable history tracking if it is currently disabled.
     */
    log.history.enable = function () {
        if (history === null) {
            history = [];
        }
    };

    /**
     * Logs error messages. Similar to `console.error`.
     *
     * @param {Mixed[]} args
     *        One or more messages or objects that should be logged as an error
     */
    log.error = function () {
        for (var _len2 = arguments.length, args = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
            args[_key2] = arguments[_key2];
        }

        return logByType('error', args);
    };

    /**
     * Logs warning messages. Similar to `console.warn`.
     *
     * @param {Mixed[]} args
     *        One or more messages or objects that should be logged as a warning.
     */
    log.warn = function () {
        for (var _len3 = arguments.length, args = Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
            args[_key3] = arguments[_key3];
        }

        return logByType('warn', args);
    };

    var log$1 = log;

    function clean (s) {
        return s.replace(/\n\r?\s*/g, '')
    }


    var tsml = function tsml (sa) {
        var s = ''
            , i = 0;

        for (; i < arguments.length; i++)
            s += clean(sa[i]) + (arguments[i + 1] || '');

        return s
    };

    /**
     * @file computed-style.js
     * @module computed-style
     */
    /**
     * A safe getComputedStyle with an IE8 fallback.
     *
     * This is needed because in Firefox, if the player is loaded in an iframe with
     * `display:none`, then `getComputedStyle` returns `null`, so, we do a null-check to
     * make sure  that the player doesn't break in these cases.
     *
     * @param {Element} el
     *        The element you want the computed style of
     *
     * @param {string} prop
     *        The property name you want
     *
     * @see https://bugzilla.mozilla.org/show_bug.cgi?id=548397
     *
     * @static
     * @const
     */
    function computedStyle(el, prop) {
        if (!el || !prop) {
            return '';
        }

        if (typeof window_1.getComputedStyle === 'function') {
            var cs = window_1.getComputedStyle(el);

            return cs ? cs[prop] : '';
        }

        return el.currentStyle[prop] || '';
    }

    var _templateObject = taggedTemplateLiteralLoose(['Setting attributes in the second argument of createEl()\n                has been deprecated. Use the third argument instead.\n                createEl(type, properties, attributes). Attempting to set ', ' to ', '.'], ['Setting attributes in the second argument of createEl()\n                has been deprecated. Use the third argument instead.\n                createEl(type, properties, attributes). Attempting to set ', ' to ', '.']);

    /**
     * @file dom.js
     * @module dom
     */
    /**
     * Detect if a value is a string with any non-whitespace characters.
     *
     * @param {string} str
     *        The string to check
     *
     * @return {boolean}
     *         - True if the string is non-blank
     *         - False otherwise
     *
     */
    function isNonBlankString(str) {
        return typeof str === 'string' && /\S/.test(str);
    }

    /**
     * Throws an error if the passed string has whitespace. This is used by
     * class methods to be relatively consistent with the classList API.
     *
     * @param {string} str
     *         The string to check for whitespace.
     *
     * @throws {Error}
     *         Throws an error if there is whitespace in the string.
     *
     */
    function throwIfWhitespace(str) {
        if (/\s/.test(str)) {
            throw new Error('class has illegal whitespace characters');
        }
    }

    /**
     * Produce a regular expression for matching a className within an elements className.
     *
     * @param {string} className
     *         The className to generate the RegExp for.
     *
     * @return {RegExp}
     *         The RegExp that will check for a specific `className` in an elements
     *         className.
     */
    function classRegExp(className) {
        return new RegExp('(^|\\s)' + className + '($|\\s)');
    }

    /**
     * Whether the current DOM interface appears to be real.
     *
     * @return {Boolean}
     */
    function isReal() {
        return (

            // Both document and window will never be undefined thanks to `global`.
            document_1 === window_1.document &&

            // In IE < 9, DOM methods return "object" as their type, so all we can
            // confidently check is that it exists.
            typeof document_1.createElement !== 'undefined'
        );
    }

    /**
     * Determines, via duck typing, whether or not a value is a DOM element.
     *
     * @param {Mixed} value
     *        The thing to check
     *
     * @return {boolean}
     *         - True if it is a DOM element
     *         - False otherwise
     */
    function isEl(value) {
        return isObject(value) && value.nodeType === 1;
    }

    /**
     * Creates functions to query the DOM using a given method.
     *
     * @param {string} method
     *         The method to create the query with.
     *
     * @return {Function}
     *         The query method
     */
    function createQuerier(method) {
        return function (selector, context) {
            if (!isNonBlankString(selector)) {
                return document_1[method](null);
            }
            if (isNonBlankString(context)) {
                context = document_1.querySelector(context);
            }

            var ctx = isEl(context) ? context : document_1;

            return ctx[method] && ctx[method](selector);
        };
    }

    /**
     * Creates an element and applies properties.
     *
     * @param {string} [tagName='div']
     *         Name of tag to be created.
     *
     * @param {Object} [properties={}]
     *         Element properties to be applied.
     *
     * @param {Object} [attributes={}]
     *         Element attributes to be applied.
     *
     * @param {String|Element|TextNode|Array|Function} [content]
     *         Contents for the element (see: {@link dom:normalizeContent})
     *
     * @return {Element}
     *         The element that was created.
     */
    function createEl() {
        var tagName = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'div';
        var properties = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
        var attributes = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};
        var content = arguments[3];

        var el = document_1.createElement(tagName);

        Object.getOwnPropertyNames(properties).forEach(function (propName) {
            var val = properties[propName];

            // See #2176
            // We originally were accepting both properties and attributes in the
            // same object, but that doesn't work so well.
            if (propName.indexOf('aria-') !== -1 || propName === 'role' || propName === 'type') {
                log$1.warn(tsml(_templateObject, propName, val));
                el.setAttribute(propName, val);

                // Handle textContent since it's not supported everywhere and we have a
                // method for it.
            } else if (propName === 'textContent') {
                textContent(el, val);
            } else {
                el[propName] = val;
            }
        });

        Object.getOwnPropertyNames(attributes).forEach(function (attrName) {
            el.setAttribute(attrName, attributes[attrName]);
        });

        if (content) {
            appendContent(el, content);
        }

        return el;
    }

    /**
     * Injects text into an element, replacing any existing contents entirely.
     *
     * @param {Element} el
     *        The element to add text content into
     *
     * @param {string} text
     *        The text content to add.
     *
     * @return {Element}
     *         The element with added text content.
     */
    function textContent(el, text) {
        if (typeof el.textContent === 'undefined') {
            el.innerText = text;
        } else {
            el.textContent = text;
        }
        return el;
    }

    /**
     * Insert an element as the first child node of another
     *
     * @param {Element} child
     *        Element to insert
     *
     * @param {Element} parent
     *        Element to insert child into
     */
    function prependTo(child, parent) {
        if (parent.firstChild) {
            parent.insertBefore(child, parent.firstChild);
        } else {
            parent.appendChild(child);
        }
    }

    /**
     * Check if an element has a CSS class
     *
     * @param {Element} element
     *        Element to check
     *
     * @param {string} classToCheck
     *        Class name to check for
     *
     * @return {boolean}
     *         - True if the element had the class
     *         - False otherwise.
     *
     * @throws {Error}
     *         Throws an error if `classToCheck` has white space.
     */
    function hasClass(element, classToCheck) {
        throwIfWhitespace(classToCheck);
        if (element.classList) {
            return element.classList.contains(classToCheck);
        }
        return classRegExp(classToCheck).test(element.className);
    }

    /**
     * Add a CSS class name to an element
     *
     * @param {Element} element
     *        Element to add class name to.
     *
     * @param {string} classToAdd
     *        Class name to add.
     *
     * @return {Element}
     *         The dom element with the added class name.
     */
    function addClass(element, classToAdd) {
        if (element.classList) {
            element.classList.add(classToAdd);

            // Don't need to `throwIfWhitespace` here because `hasElClass` will do it
            // in the case of classList not being supported.
        } else if (!hasClass(element, classToAdd)) {
            element.className = (element.className + ' ' + classToAdd).trim();
        }

        return element;
    }

    /**
     * Remove a CSS class name from an element
     *
     * @param {Element} element
     *        Element to remove a class name from.
     *
     * @param {string} classToRemove
     *        Class name to remove
     *
     * @return {Element}
     *         The dom element with class name removed.
     */
    function removeClass(element, classToRemove) {
        if (element.classList) {
            element.classList.remove(classToRemove);
        } else {
            throwIfWhitespace(classToRemove);
            element.className = element.className.split(/\s+/).filter(function (c) {
                return c !== classToRemove;
            }).join(' ');
        }

        return element;
    }

    /**
     * The callback definition for toggleElClass.
     *
     * @callback Dom~PredicateCallback
     * @param {Element} element
     *        The DOM element of the Component.
     *
     * @param {string} classToToggle
     *        The `className` that wants to be toggled
     *
     * @return {boolean|undefined}
     *         - If true the `classToToggle` will get added to `element`.
     *         - If false the `classToToggle` will get removed from `element`.
     *         - If undefined this callback will be ignored
     */

    /**
     * Adds or removes a CSS class name on an element depending on an optional
     * condition or the presence/absence of the class name.
     *
     * @param {Element} element
     *        The element to toggle a class name on.
     *
     * @param {string} classToToggle
     *        The class that should be toggled
     *
     * @param {boolean|PredicateCallback} [predicate]
     *        See the return value for {@link Dom~PredicateCallback}
     *
     * @return {Element}
     *         The element with a class that has been toggled.
     */
    function toggleClass(element, classToToggle, predicate) {

        // This CANNOT use `classList` internally because IE does not support the
        // second parameter to the `classList.toggle()` method! Which is fine because
        // `classList` will be used by the add/remove functions.
        var has = hasClass(element, classToToggle);

        if (typeof predicate === 'function') {
            predicate = predicate(element, classToToggle);
        }

        if (typeof predicate !== 'boolean') {
            predicate = !has;
        }

        // If the necessary class operation matches the current state of the
        // element, no action is required.
        if (predicate === has) {
            return;
        }

        if (predicate) {
            addClass(element, classToToggle);
        } else {
            removeClass(element, classToToggle);
        }

        return element;
    }

    /**
     * Apply attributes to an HTML element.
     *
     * @param {Element} el
     *        Element to add attributes to.
     *
     * @param {Object} [attributes]
     *        Attributes to be applied.
     */
    function setAttributes(el, attributes) {
        Object.getOwnPropertyNames(attributes).forEach(function (attrName) {
            var attrValue = attributes[attrName];

            if (attrValue === null || typeof attrValue === 'undefined' || attrValue === false) {
                el.removeAttribute(attrName);
            } else {
                el.setAttribute(attrName, attrValue === true ? '' : attrValue);
            }
        });
    }

    /**
     * Get an element's attribute values, as defined on the HTML tag
     * Attributes are not the same as properties. They're defined on the tag
     * or with setAttribute (which shouldn't be used with HTML)
     * This will return true or false for boolean attributes.
     *
     * @param {Element} tag
     *        Element from which to get tag attributes.
     *
     * @return {Object}
     *         All attributes of the element.
     */
    function getAttributes(tag) {
        var obj = {};

        // known boolean attributes
        // we can check for matching boolean properties, but older browsers
        // won't know about HTML5 boolean attributes that we still read from
        var knownBooleans = ',' + 'autoplay,controls,playsinline,loop,muted,default,defaultMuted' + ',';

        if (tag && tag.attributes && tag.attributes.length > 0) {
            var attrs = tag.attributes;

            for (var i = attrs.length - 1; i >= 0; i--) {
                var attrName = attrs[i].name;
                var attrVal = attrs[i].value;

                // check for known booleans
                // the matching element property will return a value for typeof
                if (typeof tag[attrName] === 'boolean' || knownBooleans.indexOf(',' + attrName + ',') !== -1) {
                    // the value of an included boolean attribute is typically an empty
                    // string ('') which would equal false if we just check for a false value.
                    // we also don't want support bad code like autoplay='false'
                    attrVal = attrVal !== null ? true : false;
                }

                obj[attrName] = attrVal;
            }
        }

        return obj;
    }

    /**
     * Get the value of an element's attribute
     *
     * @param {Element} el
     *        A DOM element
     *
     * @param {string} attribute
     *        Attribute to get the value of
     *
     * @return {string}
     *         value of the attribute
     */
    function getAttribute(el, attribute) {
        return el.getAttribute(attribute);
    }

    /**
     * Set the value of an element's attribute
     *
     * @param {Element} el
     *        A DOM element
     *
     * @param {string} attribute
     *        Attribute to set
     *
     * @param {string} value
     *        Value to set the attribute to
     */
    function setAttribute(el, attribute, value) {
        el.setAttribute(attribute, value);
    }

    /**
     * Remove an element's attribute
     *
     * @param {Element} el
     *        A DOM element
     *
     * @param {string} attribute
     *        Attribute to remove
     */
    function removeAttribute(el, attribute) {
        el.removeAttribute(attribute);
    }

    /**
     * Attempt to block the ability to select text while dragging controls
     */
    function blockTextSelection() {
        document_1.body.focus();
        document_1.onselectstart = function () {
            return false;
        };
    }

    /**
     * Turn off text selection blocking
     */
    function unblockTextSelection() {
        document_1.onselectstart = function () {
            return true;
        };
    }

    /**
     * Identical to the native `getBoundingClientRect` function, but ensures that
     * the method is supported at all (it is in all browsers we claim to support)
     * and that the element is in the DOM before continuing.
     *
     * This wrapper function also shims properties which are not provided by some
     * older browsers (namely, IE8).
     *
     * Additionally, some browsers do not support adding properties to a
     * `ClientRect`/`DOMRect` object; so, we shallow-copy it with the standard
     * properties (except `x` and `y` which are not widely supported). This helps
     * avoid implementations where keys are non-enumerable.
     *
     * @param  {Element} el
     *         Element whose `ClientRect` we want to calculate.
     *
     * @return {Object|undefined}
     *         Always returns a plain
     */
    function getBoundingClientRect(el) {
        if (el && el.getBoundingClientRect && el.parentNode) {
            var rect = el.getBoundingClientRect();
            var result = {};

            ['bottom', 'height', 'left', 'right', 'top', 'width'].forEach(function (k) {
                if (rect[k] !== undefined) {
                    result[k] = rect[k];
                }
            });

            if (!result.height) {
                result.height = parseFloat(computedStyle(el, 'height'));
            }

            if (!result.width) {
                result.width = parseFloat(computedStyle(el, 'width'));
            }

            return result;
        }
    }

    /**
     * The postion of a DOM element on the page.
     *
     * @typedef {Object} module:dom~Position
     *
     * @property {number} left
     *           Pixels to the left
     *
     * @property {number} top
     *           Pixels on top
     */

    /**
     * Offset Left.
     * getBoundingClientRect technique from
     * John Resig
     *
     * @see http://ejohn.org/blog/getboundingclientrect-is-awesome/
     *
     * @param {Element} el
     *        Element from which to get offset
     *
     * @return {module:dom~Position}
     *         The position of the element that was passed in.
     */
    function findPosition(el) {
        var box = void 0;

        if (el.getBoundingClientRect && el.parentNode) {
            box = el.getBoundingClientRect();
        }

        if (!box) {
            return {
                left: 0,
                top: 0
            };
        }

        var docEl = document_1.documentElement;
        var body = document_1.body;

        var clientLeft = docEl.clientLeft || body.clientLeft || 0;
        var scrollLeft = window_1.pageXOffset || body.scrollLeft;
        var left = box.left + scrollLeft - clientLeft;

        var clientTop = docEl.clientTop || body.clientTop || 0;
        var scrollTop = window_1.pageYOffset || body.scrollTop;
        var top = box.top + scrollTop - clientTop;

        // Android sometimes returns slightly off decimal values, so need to round
        return {
            left: Math.round(left),
            top: Math.round(top)
        };
    }

    /**
     * x and y coordinates for a dom element or mouse pointer
     *
     * @typedef {Object} Dom~Coordinates
     *
     * @property {number} x
     *           x coordinate in pixels
     *
     * @property {number} y
     *           y coordinate in pixels
     */

    /**
     * Get pointer position in element
     * Returns an object with x and y coordinates.
     * The base on the coordinates are the bottom left of the element.
     *
     * @param {Element} el
     *        Element on which to get the pointer position on
     *
     * @param {EventTarget~Event} event
     *        Event object
     *
     * @return {Dom~Coordinates}
     *         A Coordinates object corresponding to the mouse position.
     *
     */
    function getPointerPosition(el, event) {
        var position = {};
        var box = findPosition(el);
        var boxW = el.offsetWidth;
        var boxH = el.offsetHeight;

        var boxY = box.top;
        var boxX = box.left;
        var pageY = event.pageY;
        var pageX = event.pageX;

        if (event.changedTouches) {
            pageX = event.changedTouches[0].pageX;
            pageY = event.changedTouches[0].pageY;
        }

        position.y = Math.max(0, Math.min(1, (boxY - pageY + boxH) / boxH));
        position.x = Math.max(0, Math.min(1, (pageX - boxX) / boxW));

        return position;
    }

    /**
     * Determines, via duck typing, whether or not a value is a text node.
     *
     * @param {Mixed} value
     *        Check if this value is a text node.
     *
     * @return {boolean}
     *         - True if it is a text node
     *         - False otherwise
     */
    function isTextNode(value) {
        return isObject(value) && value.nodeType === 3;
    }

    /**
     * Empties the contents of an element.
     *
     * @param {Element} el
     *        The element to empty children from
     *
     * @return {Element}
     *         The element with no children
     */
    function emptyEl(el) {
        while (el.firstChild) {
            el.removeChild(el.firstChild);
        }
        return el;
    }

    /**
     * Normalizes content for eventual insertion into the DOM.
     *
     * This allows a wide range of content definition methods, but protects
     * from falling into the trap of simply writing to `innerHTML`, which is
     * an XSS concern.
     *
     * The content for an element can be passed in multiple types and
     * combinations, whose behavior is as follows:
     *
     * @param {String|Element|TextNode|Array|Function} content
     *        - String: Normalized into a text node.
     *        - Element/TextNode: Passed through.
     *        - Array: A one-dimensional array of strings, elements, nodes, or functions
     *          (which return single strings, elements, or nodes).
     *        - Function: If the sole argument, is expected to produce a string, element,
     *          node, or array as defined above.
     *
     * @return {Array}
     *         All of the content that was passed in normalized.
     */
    function normalizeContent(content) {

        // First, invoke content if it is a function. If it produces an array,
        // that needs to happen before normalization.
        if (typeof content === 'function') {
            content = content();
        }

        // Next up, normalize to an array, so one or many items can be normalized,
        // filtered, and returned.
        return (Array.isArray(content) ? content : [content]).map(function (value) {

            // First, invoke value if it is a function to produce a new value,
            // which will be subsequently normalized to a Node of some kind.
            if (typeof value === 'function') {
                value = value();
            }

            if (isEl(value) || isTextNode(value)) {
                return value;
            }

            if (typeof value === 'string' && /\S/.test(value)) {
                return document_1.createTextNode(value);
            }
        }).filter(function (value) {
            return value;
        });
    }

    /**
     * Normalizes and appends content to an element.
     *
     * @param {Element} el
     *        Element to append normalized content to.
     *
     *
     * @param {String|Element|TextNode|Array|Function} content
     *        See the `content` argument of {@link dom:normalizeContent}
     *
     * @return {Element}
     *         The element with appended normalized content.
     */
    function appendContent(el, content) {
        normalizeContent(content).forEach(function (node) {
            return el.appendChild(node);
        });
        return el;
    }

    /**
     * Normalizes and inserts content into an element; this is identical to
     * `appendContent()`, except it empties the element first.
     *
     * @param {Element} el
     *        Element to insert normalized content into.
     *
     * @param {String|Element|TextNode|Array|Function} content
     *        See the `content` argument of {@link dom:normalizeContent}
     *
     * @return {Element}
     *         The element with inserted normalized content.
     *
     */
    function insertContent(el, content) {
        return appendContent(emptyEl(el), content);
    }

    /**
     * Finds a single DOM element matching `selector` within the optional
     * `context` of another DOM element (defaulting to `document`).
     *
     * @param {string} selector
     *        A valid CSS selector, which will be passed to `querySelector`.
     *
     * @param {Element|String} [context=document]
     *        A DOM element within which to query. Can also be a selector
     *        string in which case the first matching element will be used
     *        as context. If missing (or no element matches selector), falls
     *        back to `document`.
     *
     * @return {Element|null}
     *         The element that was found or null.
     */
    var $ = createQuerier('querySelector');

    /**
     * Finds a all DOM elements matching `selector` within the optional
     * `context` of another DOM element (defaulting to `document`).
     *
     * @param {string} selector
     *           A valid CSS selector, which will be passed to `querySelectorAll`.
     *
     * @param {Element|String} [context=document]
     *           A DOM element within which to query. Can also be a selector
     *           string in which case the first matching element will be used
     *           as context. If missing (or no element matches selector), falls
     *           back to `document`.
     *
     * @return {NodeList}
     *         A element list of elements that were found. Will be empty if none were found.
     *
     */
    var $$ = createQuerier('querySelectorAll');



    var Dom = (Object.freeze || Object)({
        isReal: isReal,
        isEl: isEl,
        createEl: createEl,
        textContent: textContent,
        prependTo: prependTo,
        hasClass: hasClass,
        addClass: addClass,
        removeClass: removeClass,
        toggleClass: toggleClass,
        setAttributes: setAttributes,
        getAttributes: getAttributes,
        getAttribute: getAttribute,
        setAttribute: setAttribute,
        removeAttribute: removeAttribute,
        blockTextSelection: blockTextSelection,
        unblockTextSelection: unblockTextSelection,
        getBoundingClientRect: getBoundingClientRect,
        findPosition: findPosition,
        getPointerPosition: getPointerPosition,
        isTextNode: isTextNode,
        emptyEl: emptyEl,
        normalizeContent: normalizeContent,
        appendContent: appendContent,
        insertContent: insertContent,
        $: $,
        $$: $$
    });

    /**
     * @file guid.js
     * @module guid
     */

    /**
     * Unique ID for an element or function
     * @type {Number}
     */
    var _guid = 1;

    /**
     * Get a unique auto-incrementing ID by number that has not been returned before.
     *
     * @return {number}
     *         A new unique ID.
     */
    function newGUID() {
        return _guid++;
    }

    /**
     * @file dom-data.js
     * @module dom-data
     */
    /**
     * Element Data Store.
     *
     * Allows for binding data to an element without putting it directly on the
     * element. Ex. Event listeners are stored here.
     * (also from jsninja.com, slightly modified and updated for closure compiler)
     *
     * @type {Object}
     * @private
     */
    var elData = {};

    /*
     * Unique attribute name to store an element's guid in
     *
     * @type {String}
     * @constant
     * @private
     */
    var elIdAttr = 'vdata' + new Date().getTime();

    /**
     * Returns the cache object where data for an element is stored
     *
     * @param {Element} el
     *        Element to store data for.
     *
     * @return {Object}
     *         The cache object for that el that was passed in.
     */
    function getData(el) {
        var id = el[elIdAttr];

        if (!id) {
            id = el[elIdAttr] = newGUID();
        }

        if (!elData[id]) {
            elData[id] = {};
        }

        return elData[id];
    }

    /**
     * Returns whether or not an element has cached data
     *
     * @param {Element} el
     *        Check if this element has cached data.
     *
     * @return {boolean}
     *         - True if the DOM element has cached data.
     *         - False otherwise.
     */
    function hasData(el) {
        var id = el[elIdAttr];

        if (!id) {
            return false;
        }

        return !!Object.getOwnPropertyNames(elData[id]).length;
    }

    /**
     * Delete data for the element from the cache and the guid attr from getElementById
     *
     * @param {Element} el
     *        Remove cached data for this element.
     */
    function removeData(el) {
        var id = el[elIdAttr];

        if (!id) {
            return;
        }

        // Remove all stored data
        delete elData[id];

        // Remove the elIdAttr property from the DOM node
        try {
            delete el[elIdAttr];
        } catch (e) {
            if (el.removeAttribute) {
                el.removeAttribute(elIdAttr);
            } else {
                // IE doesn't appear to support removeAttribute on the document element
                el[elIdAttr] = null;
            }
        }
    }

    /**
     * @file events.js. An Event System (John Resig - Secrets of a JS Ninja http://jsninja.com/)
     * (Original book version wasn't completely usable, so fixed some things and made Closure Compiler compatible)
     * This should work very similarly to jQuery's events, however it's based off the book version which isn't as
     * robust as jquery's, so there's probably some differences.
     *
     * @module events
     */

    /**
     * Clean up the listener cache and dispatchers
     *
     * @param {Element|Object} elem
     *        Element to clean up
     *
     * @param {string} type
     *        Type of event to clean up
     */
    function _cleanUpEvents(elem, type) {
        var data = getData(elem);

        // Remove the events of a particular type if there are none left
        if (data.handlers[type].length === 0) {
            delete data.handlers[type];
            // data.handlers[type] = null;
            // Setting to null was causing an error with data.handlers

            // Remove the meta-handler from the element
            if (elem.removeEventListener) {
                elem.removeEventListener(type, data.dispatcher, false);
            } else if (elem.detachEvent) {
                elem.detachEvent('on' + type, data.dispatcher);
            }
        }

        // Remove the events object if there are no types left
        if (Object.getOwnPropertyNames(data.handlers).length <= 0) {
            delete data.handlers;
            delete data.dispatcher;
            delete data.disabled;
        }

        // Finally remove the element data if there is no data left
        if (Object.getOwnPropertyNames(data).length === 0) {
            removeData(elem);
        }
    }

    /**
     * Loops through an array of event types and calls the requested method for each type.
     *
     * @param {Function} fn
     *        The event method we want to use.
     *
     * @param {Element|Object} elem
     *        Element or object to bind listeners to
     *
     * @param {string} type
     *        Type of event to bind to.
     *
     * @param {EventTarget~EventListener} callback
     *        Event listener.
     */
    function _handleMultipleEvents(fn, elem, types, callback) {
        types.forEach(function (type) {
            // Call the event method for each one of the types
            fn(elem, type, callback);
        });
    }

    /**
     * Fix a native event to have standard property values
     *
     * @param {Object} event
     *        Event object to fix.
     *
     * @return {Object}
     *         Fixed event object.
     */
    function fixEvent(event) {

        function returnTrue() {
            return true;
        }

        function returnFalse() {
            return false;
        }

        // Test if fixing up is needed
        // Used to check if !event.stopPropagation instead of isPropagationStopped
        // But native events return true for stopPropagation, but don't have
        // other expected methods like isPropagationStopped. Seems to be a problem
        // with the Javascript Ninja code. So we're just overriding all events now.
        if (!event || !event.isPropagationStopped) {
            var old = event || window_1.event;

            event = {};
            // Clone the old object so that we can modify the values event = {};
            // IE8 Doesn't like when you mess with native event properties
            // Firefox returns false for event.hasOwnProperty('type') and other props
            //  which makes copying more difficult.
            // TODO: Probably best to create a whitelist of event props
            for (var key in old) {
                // Safari 6.0.3 warns you if you try to copy deprecated layerX/Y
                // Chrome warns you if you try to copy deprecated keyboardEvent.keyLocation
                // and webkitMovementX/Y
                if (key !== 'layerX' && key !== 'layerY' && key !== 'keyLocation' && key !== 'webkitMovementX' && key !== 'webkitMovementY') {
                    // Chrome 32+ warns if you try to copy deprecated returnValue, but
                    // we still want to if preventDefault isn't supported (IE8).
                    if (!(key === 'returnValue' && old.preventDefault)) {
                        event[key] = old[key];
                    }
                }
            }

            // The event occurred on this element
            if (!event.target) {
                event.target = event.srcElement || document_1;
            }

            // Handle which other element the event is related to
            if (!event.relatedTarget) {
                event.relatedTarget = event.fromElement === event.target ? event.toElement : event.fromElement;
            }

            // Stop the default browser action
            event.preventDefault = function () {
                if (old.preventDefault) {
                    old.preventDefault();
                }
                event.returnValue = false;
                old.returnValue = false;
                event.defaultPrevented = true;
            };

            event.defaultPrevented = false;

            // Stop the event from bubbling
            event.stopPropagation = function () {
                if (old.stopPropagation) {
                    old.stopPropagation();
                }
                event.cancelBubble = true;
                old.cancelBubble = true;
                event.isPropagationStopped = returnTrue;
            };

            event.isPropagationStopped = returnFalse;

            // Stop the event from bubbling and executing other handlers
            event.stopImmediatePropagation = function () {
                if (old.stopImmediatePropagation) {
                    old.stopImmediatePropagation();
                }
                event.isImmediatePropagationStopped = returnTrue;
                event.stopPropagation();
            };

            event.isImmediatePropagationStopped = returnFalse;

            // Handle mouse position
            if (event.clientX !== null && event.clientX !== undefined) {
                var doc = document_1.documentElement;
                var body = document_1.body;

                event.pageX = event.clientX + (doc && doc.scrollLeft || body && body.scrollLeft || 0) - (doc && doc.clientLeft || body && body.clientLeft || 0);
                event.pageY = event.clientY + (doc && doc.scrollTop || body && body.scrollTop || 0) - (doc && doc.clientTop || body && body.clientTop || 0);
            }

            // Handle key presses
            event.which = event.charCode || event.keyCode;

            // Fix button for mouse clicks:
            // 0 == left; 1 == middle; 2 == right
            if (event.button !== null && event.button !== undefined) {

                // The following is disabled because it does not pass videojs-standard
                // and... yikes.
                /* eslint-disable */
                event.button = event.button & 1 ? 0 : event.button & 4 ? 1 : event.button & 2 ? 2 : 0;
                /* eslint-enable */
            }
        }

        // Returns fixed-up instance
        return event;
    }

    /**
     * Whether passive event listeners are supported
     */
    var _supportsPassive = false;

    (function () {
        try {
            var opts = Object.defineProperty({}, 'passive', {
                get: function get() {
                    _supportsPassive = true;
                }
            });

            window_1.addEventListener('test', null, opts);
        } catch (e) {
            // disregard
        }
    })();

    /**
     * Touch events Chrome expects to be passive
     */
    var passiveEvents = ['touchstart', 'touchmove'];

    /**
     * Add an event listener to element
     * It stores the handler function in a separate cache object
     * and adds a generic handler to the element's event,
     * along with a unique id (guid) to the element.
     *
     * @param {Element|Object} elem
     *        Element or object to bind listeners to
     *
     * @param {string|string[]} type
     *        Type of event to bind to.
     *
     * @param {EventTarget~EventListener} fn
     *        Event listener.
     */
    function on(elem, type, fn) {
        if (Array.isArray(type)) {
            return _handleMultipleEvents(on, elem, type, fn);
        }

        var data = getData(elem);

        // We need a place to store all our handler data
        if (!data.handlers) {
            data.handlers = {};
        }

        if (!data.handlers[type]) {
            data.handlers[type] = [];
        }

        if (!fn.guid) {
            fn.guid = newGUID();
        }

        data.handlers[type].push(fn);

        if (!data.dispatcher) {
            data.disabled = false;

            data.dispatcher = function (event, hash) {

                if (data.disabled) {
                    return;
                }

                event = fixEvent(event);

                var handlers = data.handlers[event.type];

                if (handlers) {
                    // Copy handlers so if handlers are added/removed during the process it doesn't throw everything off.
                    var handlersCopy = handlers.slice(0);

                    for (var m = 0, n = handlersCopy.length; m < n; m++) {
                        if (event.isImmediatePropagationStopped()) {
                            break;
                        } else {
                            try {
                                handlersCopy[m].call(elem, event, hash);
                            } catch (e) {
                                log$1.error(e);
                            }
                        }
                    }
                }
            };
        }

        if (data.handlers[type].length === 1) {
            if (elem.addEventListener) {
                var options = false;

                if (_supportsPassive && passiveEvents.indexOf(type) > -1) {
                    options = { passive: true };
                }
                elem.addEventListener(type, data.dispatcher, options);
            } else if (elem.attachEvent) {
                elem.attachEvent('on' + type, data.dispatcher);
            }
        }
    }

    /**
     * Removes event listeners from an element
     *
     * @param {Element|Object} elem
     *        Object to remove listeners from.
     *
     * @param {string|string[]} [type]
     *        Type of listener to remove. Don't include to remove all events from element.
     *
     * @param {EventTarget~EventListener} [fn]
     *        Specific listener to remove. Don't include to remove listeners for an event
     *        type.
     */
    function off(elem, type, fn) {
        // Don't want to add a cache object through getElData if not needed
        if (!hasData(elem)) {
            return;
        }

        var data = getData(elem);

        // If no events exist, nothing to unbind
        if (!data.handlers) {
            return;
        }

        if (Array.isArray(type)) {
            return _handleMultipleEvents(off, elem, type, fn);
        }

        // Utility function
        var removeType = function removeType(t) {
            data.handlers[t] = [];
            _cleanUpEvents(elem, t);
        };

        // Are we removing all bound events?
        if (!type) {
            for (var t in data.handlers) {
                removeType(t);
            }
            return;
        }

        var handlers = data.handlers[type];

        // If no handlers exist, nothing to unbind
        if (!handlers) {
            return;
        }

        // If no listener was provided, remove all listeners for type
        if (!fn) {
            removeType(type);
            return;
        }

        // We're only removing a single handler
        if (fn.guid) {
            for (var n = 0; n < handlers.length; n++) {
                if (handlers[n].guid === fn.guid) {
                    handlers.splice(n--, 1);
                }
            }
        }

        _cleanUpEvents(elem, type);
    }

    /**
     * Trigger an event for an element
     *
     * @param {Element|Object} elem
     *        Element to trigger an event on
     *
     * @param {EventTarget~Event|string} event
     *        A string (the type) or an event object with a type attribute
     *
     * @param {Object} [hash]
     *        data hash to pass along with the event
     *
     * @return {boolean|undefined}
     *         - Returns the opposite of `defaultPrevented` if default was prevented
     *         - Otherwise returns undefined
     */
    function trigger(elem, event, hash) {
        // Fetches element data and a reference to the parent (for bubbling).
        // Don't want to add a data object to cache for every parent,
        // so checking hasElData first.
        var elemData = hasData(elem) ? getData(elem) : {};
        var parent = elem.parentNode || elem.ownerDocument;
        // type = event.type || event,
        // handler;

        // If an event name was passed as a string, creates an event out of it
        if (typeof event === 'string') {
            event = { type: event, target: elem };
        }
        // Normalizes the event properties.
        event = fixEvent(event);

        // If the passed element has a dispatcher, executes the established handlers.
        if (elemData.dispatcher) {
            elemData.dispatcher.call(elem, event, hash);
        }

        // Unless explicitly stopped or the event does not bubble (e.g. media events)
        // recursively calls this function to bubble the event up the DOM.
        if (parent && !event.isPropagationStopped() && event.bubbles === true) {
            trigger.call(null, parent, event, hash);

            // If at the top of the DOM, triggers the default action unless disabled.
        } else if (!parent && !event.defaultPrevented) {
            var targetData = getData(event.target);

            // Checks if the target has a default action for this event.
            if (event.target[event.type]) {
                // Temporarily disables event dispatching on the target as we have already executed the handler.
                targetData.disabled = true;
                // Executes the default action.
                if (typeof event.target[event.type] === 'function') {
                    event.target[event.type]();
                }
                // Re-enables event dispatching.
                targetData.disabled = false;
            }
        }

        // Inform the triggerer if the default was prevented by returning false
        return !event.defaultPrevented;
    }

    /**
     * Trigger a listener only once for an event
     *
     * @param {Element|Object} elem
     *        Element or object to bind to.
     *
     * @param {string|string[]} type
     *        Name/type of event
     *
     * @param {Event~EventListener} fn
     *        Event Listener function
     */
    function one(elem, type, fn) {
        if (Array.isArray(type)) {
            return _handleMultipleEvents(one, elem, type, fn);
        }
        var func = function func() {
            off(elem, type, func);
            fn.apply(this, arguments);
        };

        // copy the guid to the new function so it can removed using the original function's ID
        func.guid = fn.guid = fn.guid || newGUID();
        on(elem, type, func);
    }

    var Events = (Object.freeze || Object)({
        fixEvent: fixEvent,
        on: on,
        off: off,
        trigger: trigger,
        one: one
    });

    /**
     * @file setup.js - Functions for setting up a player without
     * user interaction based on the data-setup `attribute` of the video tag.
     *
     * @module setup
     */
    var _windowLoaded = false;
    var videojs$2 = void 0;

    /**
     * Set up any tags that have a data-setup `attribute` when the player is started.
     */
    var autoSetup = function autoSetup() {

        // Protect against breakage in non-browser environments.
        if (!isReal()) {
            return;
        }

        // One day, when we stop supporting IE8, go back to this, but in the meantime...*hack hack hack*
        // var vids = Array.prototype.slice.call(document.getElementsByTagName('video'));
        // var audios = Array.prototype.slice.call(document.getElementsByTagName('audio'));
        // var mediaEls = vids.concat(audios);

        // Because IE8 doesn't support calling slice on a node list, we need to loop
        // through each list of elements to build up a new, combined list of elements.
        var vids = document_1.getElementsByTagName('video');
        var audios = document_1.getElementsByTagName('audio');
        var mediaEls = [];

        if (vids && vids.length > 0) {
            for (var i = 0, e = vids.length; i < e; i++) {
                mediaEls.push(vids[i]);
            }
        }

        if (audios && audios.length > 0) {
            for (var _i = 0, _e = audios.length; _i < _e; _i++) {
                mediaEls.push(audios[_i]);
            }
        }

        // Check if any media elements exist
        if (mediaEls && mediaEls.length > 0) {

            for (var _i2 = 0, _e2 = mediaEls.length; _i2 < _e2; _i2++) {
                var mediaEl = mediaEls[_i2];

                // Check if element exists, has getAttribute func.
                // IE seems to consider typeof el.getAttribute == 'object' instead of
                // 'function' like expected, at least when loading the player immediately.
                if (mediaEl && mediaEl.getAttribute) {

                    // Make sure this player hasn't already been set up.
                    if (mediaEl.player === undefined) {
                        var options = mediaEl.getAttribute('data-setup');

                        // Check if data-setup attr exists.
                        // We only auto-setup if they've added the data-setup attr.
                        if (options !== null) {
                            // Create new video.js instance.
                            videojs$2(mediaEl);
                        }
                    }

                    // If getAttribute isn't defined, we need to wait for the DOM.
                } else {
                    autoSetupTimeout(1);
                    break;
                }
            }

            // No videos were found, so keep looping unless page is finished loading.
        } else if (!_windowLoaded) {
            autoSetupTimeout(1);
        }
    };

    /**
     * Wait until the page is loaded before running autoSetup. This will be called in
     * autoSetup if `hasLoaded` returns false.
     *
     * @param {number} wait
     *        How long to wait in ms
     *
     * @param {module:videojs} [vjs]
     *        The videojs library function
     */
    function autoSetupTimeout(wait, vjs) {
        if (vjs) {
            videojs$2 = vjs;
        }

        window_1.setTimeout(autoSetup, wait);
    }

    if (isReal() && document_1.readyState === 'complete') {
        _windowLoaded = true;
    } else {
        /**
         * Listen for the load event on window, and set _windowLoaded to true.
         *
         * @listens load
         */
        one(window_1, 'load', function () {
            _windowLoaded = true;
        });
    }

    /**
     * @file stylesheet.js
     * @module stylesheet
     */
    /**
     * Create a DOM syle element given a className for it.
     *
     * @param {string} className
     *        The className to add to the created style element.
     *
     * @return {Element}
     *         The element that was created.
     */
    var createStyleElement = function createStyleElement(className) {
        var style = document_1.createElement('style');

        style.className = className;

        return style;
    };

    /**
     * Add text to a DOM element.
     *
     * @param {Element} el
     *        The Element to add text content to.
     *
     * @param {string} content
     *        The text to add to the element.
     */
    var setTextContent = function setTextContent(el, content) {
        if (el.styleSheet) {
            el.styleSheet.cssText = content;
        } else {
            el.textContent = content;
        }
    };

    /**
     * @file fn.js
     * @module fn
     */
    /**
     * Bind (a.k.a proxy or Context). A simple method for changing the context of a function
     * It also stores a unique id on the function so it can be easily removed from events.
     *
     * @param {Mixed} context
     *        The object to bind as scope.
     *
     * @param {Function} fn
     *        The function to be bound to a scope.
     *
     * @param {number} [uid]
     *        An optional unique ID for the function to be set
     *
     * @return {Function}
     *         The new function that will be bound into the context given
     */
    var bind = function bind(context, fn, uid) {
        // Make sure the function has a unique ID
        if (!fn.guid) {
            fn.guid = newGUID();
        }

        // Create the new function that changes the context
        var bound = function bound() {
            return fn.apply(context, arguments);
        };

        // Allow for the ability to individualize this function
        // Needed in the case where multiple objects might share the same prototype
        // IF both items add an event listener with the same function, then you try to remove just one
        // it will remove both because they both have the same guid.
        // when using this, you need to use the bind method when you remove the listener as well.
        // currently used in text tracks
        bound.guid = uid ? uid + '_' + fn.guid : fn.guid;

        return bound;
    };

    /**
     * Wraps the given function, `fn`, with a new function that only invokes `fn`
     * at most once per every `wait` milliseconds.
     *
     * @param  {Function} fn
     *         The function to be throttled.
     *
     * @param  {Number}   wait
     *         The number of milliseconds by which to throttle.
     *
     * @return {Function}
     */
    var throttle = function throttle(fn, wait) {
        var last = Date.now();

        var throttled = function throttled() {
            var now = Date.now();

            if (now - last >= wait) {
                fn.apply(undefined, arguments);
                last = now;
            }
        };

        return throttled;
    };

    /**
     * @file src/js/event-target.js
     */
    /**
     * `EventTarget` is a class that can have the same API as the DOM `EventTarget`. It
     * adds shorthand functions that wrap around lengthy functions. For example:
     * the `on` function is a wrapper around `addEventListener`.
     *
     * @see [EventTarget Spec]{@link https://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-EventTarget}
     * @class EventTarget
     */
    var EventTarget = function EventTarget() {};

    /**
     * A Custom DOM event.
     *
     * @typedef {Object} EventTarget~Event
     * @see [Properties]{@link https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent}
     */

    /**
     * All event listeners should follow the following format.
     *
     * @callback EventTarget~EventListener
     * @this {EventTarget}
     *
     * @param {EventTarget~Event} event
     *        the event that triggered this function
     *
     * @param {Object} [hash]
     *        hash of data sent during the event
     */

    /**
     * An object containing event names as keys and booleans as values.
     *
     * > NOTE: If an event name is set to a true value here {@link EventTarget#trigger}
     *         will have extra functionality. See that function for more information.
     *
     * @property EventTarget.prototype.allowedEvents_
     * @private
     */
    EventTarget.prototype.allowedEvents_ = {};

    /**
     * Adds an `event listener` to an instance of an `EventTarget`. An `event listener` is a
     * function that will get called when an event with a certain name gets triggered.
     *
     * @param {string|string[]} type
     *        An event name or an array of event names.
     *
     * @param {EventTarget~EventListener} fn
     *        The function to call with `EventTarget`s
     */
    EventTarget.prototype.on = function (type, fn) {
        // Remove the addEventListener alias before calling Events.on
        // so we don't get into an infinite type loop
        var ael = this.addEventListener;

        this.addEventListener = function () {};
        on(this, type, fn);
        this.addEventListener = ael;
    };

    /**
     * An alias of {@link EventTarget#on}. Allows `EventTarget` to mimic
     * the standard DOM API.
     *
     * @function
     * @see {@link EventTarget#on}
     */
    EventTarget.prototype.addEventListener = EventTarget.prototype.on;

    /**
     * Removes an `event listener` for a specific event from an instance of `EventTarget`.
     * This makes it so that the `event listener` will no longer get called when the
     * named event happens.
     *
     * @param {string|string[]} type
     *        An event name or an array of event names.
     *
     * @param {EventTarget~EventListener} fn
     *        The function to remove.
     */
    EventTarget.prototype.off = function (type, fn) {
        off(this, type, fn);
    };

    /**
     * An alias of {@link EventTarget#off}. Allows `EventTarget` to mimic
     * the standard DOM API.
     *
     * @function
     * @see {@link EventTarget#off}
     */
    EventTarget.prototype.removeEventListener = EventTarget.prototype.off;

    /**
     * This function will add an `event listener` that gets triggered only once. After the
     * first trigger it will get removed. This is like adding an `event listener`
     * with {@link EventTarget#on} that calls {@link EventTarget#off} on itself.
     *
     * @param {string|string[]} type
     *        An event name or an array of event names.
     *
     * @param {EventTarget~EventListener} fn
     *        The function to be called once for each event name.
     */
    EventTarget.prototype.one = function (type, fn) {
        // Remove the addEventListener alialing Events.on
        // so we don't get into an infinite type loop
        var ael = this.addEventListener;

        this.addEventListener = function () {};
        one(this, type, fn);
        this.addEventListener = ael;
    };

    /**
     * This function causes an event to happen. This will then cause any `event listeners`
     * that are waiting for that event, to get called. If there are no `event listeners`
     * for an event then nothing will happen.
     *
     * If the name of the `Event` that is being triggered is in `EventTarget.allowedEvents_`.
     * Trigger will also call the `on` + `uppercaseEventName` function.
     *
     * Example:
     * 'click' is in `EventTarget.allowedEvents_`, so, trigger will attempt to call
     * `onClick` if it exists.
     *
     * @param {string|EventTarget~Event|Object} event
     *        The name of the event, an `Event`, or an object with a key of type set to
     *        an event name.
     */
    EventTarget.prototype.trigger = function (event) {
        var type = event.type || event;

        if (typeof event === 'string') {
            event = { type: type };
        }
        event = fixEvent(event);

        if (this.allowedEvents_[type] && this['on' + type]) {
            this['on' + type](event);
        }

        trigger(this, event);
    };

    /**
     * An alias of {@link EventTarget#trigger}. Allows `EventTarget` to mimic
     * the standard DOM API.
     *
     * @function
     * @see {@link EventTarget#trigger}
     */
    EventTarget.prototype.dispatchEvent = EventTarget.prototype.trigger;

    /**
     * @file mixins/evented.js
     * @module evented
     */
    /**
     * Returns whether or not an object has had the evented mixin applied.
     *
     * @param  {Object} object
     *         An object to test.
     *
     * @return {boolean}
     *         Whether or not the object appears to be evented.
     */
    var isEvented = function isEvented(object) {
        return object instanceof EventTarget || !!object.eventBusEl_ && ['on', 'one', 'off', 'trigger'].every(function (k) {
                return typeof object[k] === 'function';
            });
    };

    /**
     * Whether a value is a valid event type - non-empty string or array.
     *
     * @private
     * @param  {string|Array} type
     *         The type value to test.
     *
     * @return {boolean}
     *         Whether or not the type is a valid event type.
     */
    var isValidEventType = function isValidEventType(type) {
        return (
            // The regex here verifies that the `type` contains at least one non-
            // whitespace character.
            typeof type === 'string' && /\S/.test(type) || Array.isArray(type) && !!type.length
        );
    };

    /**
     * Validates a value to determine if it is a valid event target. Throws if not.
     *
     * @private
     * @throws {Error}
     *         If the target does not appear to be a valid event target.
     *
     * @param  {Object} target
     *         The object to test.
     */
    var validateTarget = function validateTarget(target) {
        if (!target.nodeName && !isEvented(target)) {
            throw new Error('Invalid target; must be a DOM node or evented object.');
        }
    };

    /**
     * Validates a value to determine if it is a valid event target. Throws if not.
     *
     * @private
     * @throws {Error}
     *         If the type does not appear to be a valid event type.
     *
     * @param  {string|Array} type
     *         The type to test.
     */
    var validateEventType = function validateEventType(type) {
        if (!isValidEventType(type)) {
            throw new Error('Invalid event type; must be a non-empty string or array.');
        }
    };

    /**
     * Validates a value to determine if it is a valid listener. Throws if not.
     *
     * @private
     * @throws {Error}
     *         If the listener is not a function.
     *
     * @param  {Function} listener
     *         The listener to test.
     */
    var validateListener = function validateListener(listener) {
        if (typeof listener !== 'function') {
            throw new Error('Invalid listener; must be a function.');
        }
    };

    /**
     * Takes an array of arguments given to `on()` or `one()`, validates them, and
     * normalizes them into an object.
     *
     * @private
     * @param  {Object} self
     *         The evented object on which `on()` or `one()` was called. This
     *         object will be bound as the `this` value for the listener.
     *
     * @param  {Array} args
     *         An array of arguments passed to `on()` or `one()`.
     *
     * @return {Object}
     *         An object containing useful values for `on()` or `one()` calls.
     */
    var normalizeListenArgs = function normalizeListenArgs(self, args) {

        // If the number of arguments is less than 3, the target is always the
        // evented object itself.
        var isTargetingSelf = args.length < 3 || args[0] === self || args[0] === self.eventBusEl_;
        var target = void 0;
        var type = void 0;
        var listener = void 0;

        if (isTargetingSelf) {
            target = self.eventBusEl_;

            // Deal with cases where we got 3 arguments, but we are still listening to
            // the evented object itself.
            if (args.length >= 3) {
                args.shift();
            }

            type = args[0];
            listener = args[1];
        } else {
            target = args[0];
            type = args[1];
            listener = args[2];
        }

        validateTarget(target);
        validateEventType(type);
        validateListener(listener);

        listener = bind(self, listener);

        return { isTargetingSelf: isTargetingSelf, target: target, type: type, listener: listener };
    };

    /**
     * Adds the listener to the event type(s) on the target, normalizing for
     * the type of target.
     *
     * @private
     * @param  {Element|Object} target
     *         A DOM node or evented object.
     *
     * @param  {string} method
     *         The event binding method to use ("on" or "one").
     *
     * @param  {string|Array} type
     *         One or more event type(s).
     *
     * @param  {Function} listener
     *         A listener function.
     */
    var listen = function listen(target, method, type, listener) {
        validateTarget(target);

        if (target.nodeName) {
            Events[method](target, type, listener);
        } else {
            target[method](type, listener);
        }
    };

    /**
     * Contains methods that provide event capabilites to an object which is passed
     * to {@link module:evented|evented}.
     *
     * @mixin EventedMixin
     */
    var EventedMixin = {

        /**
         * Add a listener to an event (or events) on this object or another evented
         * object.
         *
         * @param  {string|Array|Element|Object} targetOrType
         *         If this is a string or array, it represents the event type(s)
         *         that will trigger the listener.
         *
         *         Another evented object can be passed here instead, which will
         *         cause the listener to listen for events on _that_ object.
         *
         *         In either case, the listener's `this` value will be bound to
         *         this object.
         *
         * @param  {string|Array|Function} typeOrListener
         *         If the first argument was a string or array, this should be the
         *         listener function. Otherwise, this is a string or array of event
         *         type(s).
         *
         * @param  {Function} [listener]
         *         If the first argument was another evented object, this will be
         *         the listener function.
         */
        on: function on$$1() {
            var _this = this;

            for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
                args[_key] = arguments[_key];
            }

            var _normalizeListenArgs = normalizeListenArgs(this, args),
                isTargetingSelf = _normalizeListenArgs.isTargetingSelf,
                target = _normalizeListenArgs.target,
                type = _normalizeListenArgs.type,
                listener = _normalizeListenArgs.listener;

            listen(target, 'on', type, listener);

            // If this object is listening to another evented object.
            if (!isTargetingSelf) {

                // If this object is disposed, remove the listener.
                var removeListenerOnDispose = function removeListenerOnDispose() {
                    return _this.off(target, type, listener);
                };

                // Use the same function ID as the listener so we can remove it later it
                // using the ID of the original listener.
                removeListenerOnDispose.guid = listener.guid;

                // Add a listener to the target's dispose event as well. This ensures
                // that if the target is disposed BEFORE this object, we remove the
                // removal listener that was just added. Otherwise, we create a memory leak.
                var removeRemoverOnTargetDispose = function removeRemoverOnTargetDispose() {
                    return _this.off('dispose', removeListenerOnDispose);
                };

                // Use the same function ID as the listener so we can remove it later
                // it using the ID of the original listener.
                removeRemoverOnTargetDispose.guid = listener.guid;

                listen(this, 'on', 'dispose', removeListenerOnDispose);
                listen(target, 'on', 'dispose', removeRemoverOnTargetDispose);
            }
        },


        /**
         * Add a listener to an event (or events) on this object or another evented
         * object. The listener will only be called once and then removed.
         *
         * @param  {string|Array|Element|Object} targetOrType
         *         If this is a string or array, it represents the event type(s)
         *         that will trigger the listener.
         *
         *         Another evented object can be passed here instead, which will
         *         cause the listener to listen for events on _that_ object.
         *
         *         In either case, the listener's `this` value will be bound to
         *         this object.
         *
         * @param  {string|Array|Function} typeOrListener
         *         If the first argument was a string or array, this should be the
         *         listener function. Otherwise, this is a string or array of event
         *         type(s).
         *
         * @param  {Function} [listener]
         *         If the first argument was another evented object, this will be
         *         the listener function.
         */
        one: function one$$1() {
            var _this2 = this;

            for (var _len2 = arguments.length, args = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
                args[_key2] = arguments[_key2];
            }

            var _normalizeListenArgs2 = normalizeListenArgs(this, args),
                isTargetingSelf = _normalizeListenArgs2.isTargetingSelf,
                target = _normalizeListenArgs2.target,
                type = _normalizeListenArgs2.type,
                listener = _normalizeListenArgs2.listener;

            // Targeting this evented object.


            if (isTargetingSelf) {
                listen(target, 'one', type, listener);

                // Targeting another evented object.
            } else {
                var wrapper = function wrapper() {
                    for (var _len3 = arguments.length, largs = Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
                        largs[_key3] = arguments[_key3];
                    }

                    _this2.off(target, type, wrapper);
                    listener.apply(null, largs);
                };

                // Use the same function ID as the listener so we can remove it later
                // it using the ID of the original listener.
                wrapper.guid = listener.guid;
                listen(target, 'one', type, wrapper);
            }
        },


        /**
         * Removes listener(s) from event(s) on an evented object.
         *
         * @param  {string|Array|Element|Object} [targetOrType]
         *         If this is a string or array, it represents the event type(s).
         *
         *         Another evented object can be passed here instead, in which case
         *         ALL 3 arguments are _required_.
         *
         * @param  {string|Array|Function} [typeOrListener]
         *         If the first argument was a string or array, this may be the
         *         listener function. Otherwise, this is a string or array of event
         *         type(s).
         *
         * @param  {Function} [listener]
         *         If the first argument was another evented object, this will be
         *         the listener function; otherwise, _all_ listeners bound to the
         *         event type(s) will be removed.
         */
        off: function off$$1(targetOrType, typeOrListener, listener) {

            // Targeting this evented object.
            if (!targetOrType || isValidEventType(targetOrType)) {
                off(this.eventBusEl_, targetOrType, typeOrListener);

                // Targeting another evented object.
            } else {
                var target = targetOrType;
                var type = typeOrListener;

                // Fail fast and in a meaningful way!
                validateTarget(target);
                validateEventType(type);
                validateListener(listener);

                // Ensure there's at least a guid, even if the function hasn't been used
                listener = bind(this, listener);

                // Remove the dispose listener on this evented object, which was given
                // the same guid as the event listener in on().
                this.off('dispose', listener);

                if (target.nodeName) {
                    off(target, type, listener);
                    off(target, 'dispose', listener);
                } else if (isEvented(target)) {
                    target.off(type, listener);
                    target.off('dispose', listener);
                }
            }
        },


        /**
         * Fire an event on this evented object, causing its listeners to be called.
         *
         * @param   {string|Object} event
         *          An event type or an object with a type property.
         *
         * @param   {Object} [hash]
         *          An additional object to pass along to listeners.
         *
         * @returns {boolean}
         *          Whether or not the default behavior was prevented.
         */
        trigger: function trigger$$1(event, hash) {
            return trigger(this.eventBusEl_, event, hash);
        }
    };

    /**
     * Applies {@link module:evented~EventedMixin|EventedMixin} to a target object.
     *
     * @param  {Object} target
     *         The object to which to add event methods.
     *
     * @param  {Object} [options={}]
     *         Options for customizing the mixin behavior.
     *
     * @param  {String} [options.eventBusKey]
     *         By default, adds a `eventBusEl_` DOM element to the target object,
     *         which is used as an event bus. If the target object already has a
     *         DOM element that should be used, pass its key here.
     *
     * @return {Object}
     *         The target object.
     */
    function evented(target) {
        var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
        var eventBusKey = options.eventBusKey;

        // Set or create the eventBusEl_.

        if (eventBusKey) {
            if (!target[eventBusKey].nodeName) {
                throw new Error('The eventBusKey "' + eventBusKey + '" does not refer to an element.');
            }
            target.eventBusEl_ = target[eventBusKey];
        } else {
            target.eventBusEl_ = createEl('span', { className: 'vjs-event-bus' });
        }

        assign(target, EventedMixin);

        // When any evented object is disposed, it removes all its listeners.
        target.on('dispose', function () {
            return target.off();
        });

        return target;
    }

    /**
     * @file mixins/stateful.js
     * @module stateful
     */
    /**
     * Contains methods that provide statefulness to an object which is passed
     * to {@link module:stateful}.
     *
     * @mixin StatefulMixin
     */
    var StatefulMixin = {

        /**
         * A hash containing arbitrary keys and values representing the state of
         * the object.
         *
         * @type {Object}
         */
        state: {},

        /**
         * Set the state of an object by mutating its
         * {@link module:stateful~StatefulMixin.state|state} object in place.
         *
         * @fires   module:stateful~StatefulMixin#statechanged
         * @param   {Object|Function} stateUpdates
         *          A new set of properties to shallow-merge into the plugin state.
         *          Can be a plain object or a function returning a plain object.
         *
         * @returns {Object|undefined}
         *          An object containing changes that occurred. If no changes
         *          occurred, returns `undefined`.
         */
        setState: function setState(stateUpdates) {
            var _this = this;

            // Support providing the `stateUpdates` state as a function.
            if (typeof stateUpdates === 'function') {
                stateUpdates = stateUpdates();
            }

            var changes = void 0;

            each(stateUpdates, function (value, key) {

                // Record the change if the value is different from what's in the
                // current state.
                if (_this.state[key] !== value) {
                    changes = changes || {};
                    changes[key] = {
                        from: _this.state[key],
                        to: value
                    };
                }

                _this.state[key] = value;
            });

            // Only trigger "statechange" if there were changes AND we have a trigger
            // function. This allows us to not require that the target object be an
            // evented object.
            if (changes && isEvented(this)) {

                /**
                 * An event triggered on an object that is both
                 * {@link module:stateful|stateful} and {@link module:evented|evented}
                 * indicating that its state has changed.
                 *
                 * @event    module:stateful~StatefulMixin#statechanged
                 * @type     {Object}
                 * @property {Object} changes
                 *           A hash containing the properties that were changed and
                 *           the values they were changed `from` and `to`.
                 */
                this.trigger({
                    changes: changes,
                    type: 'statechanged'
                });
            }

            return changes;
        }
    };

    /**
     * Applies {@link module:stateful~StatefulMixin|StatefulMixin} to a target
     * object.
     *
     * If the target object is {@link module:evented|evented} and has a
     * `handleStateChanged` method, that method will be automatically bound to the
     * `statechanged` event on itself.
     *
     * @param   {Object} target
     *          The object to be made stateful.
     *
     * @param   {Object} [defaultState]
     *          A default set of properties to populate the newly-stateful object's
     *          `state` property.
     *
     * @returns {Object}
     *          Returns the `target`.
     */
    function stateful(target, defaultState) {
        assign(target, StatefulMixin);

        // This happens after the mixing-in because we need to replace the `state`
        // added in that step.
        target.state = assign({}, target.state, defaultState);

        // Auto-bind the `handleStateChanged` method of the target object if it exists.
        if (typeof target.handleStateChanged === 'function' && isEvented(target)) {
            target.on('statechanged', target.handleStateChanged);
        }

        return target;
    }

    /**
     * @file to-title-case.js
     * @module to-title-case
     */

    /**
     * Uppercase the first letter of a string.
     *
     * @param {string} string
     *        String to be uppercased
     *
     * @return {string}
     *         The string with an uppercased first letter
     */
    function toTitleCase(string) {
        if (typeof string !== 'string') {
            return string;
        }

        return string.charAt(0).toUpperCase() + string.slice(1);
    }

    /**
     * Compares the TitleCase versions of the two strings for equality.
     *
     * @param {string} str1
     *        The first string to compare
     *
     * @param {string} str2
     *        The second string to compare
     *
     * @return {boolean}
     *         Whether the TitleCase versions of the strings are equal
     */
    function titleCaseEquals(str1, str2) {
        return toTitleCase(str1) === toTitleCase(str2);
    }

    /**
     * @file merge-options.js
     * @module merge-options
     */
    /**
     * Deep-merge one or more options objects, recursively merging **only** plain
     * object properties.
     *
     * @param   {Object[]} sources
     *          One or more objects to merge into a new object.
     *
     * @returns {Object}
     *          A new object that is the merged result of all sources.
     */
    function mergeOptions() {
        var result = {};

        for (var _len = arguments.length, sources = Array(_len), _key = 0; _key < _len; _key++) {
            sources[_key] = arguments[_key];
        }

        sources.forEach(function (source) {
            if (!source) {
                return;
            }

            each(source, function (value, key) {
                if (!isPlain(value)) {
                    result[key] = value;
                    return;
                }

                if (!isPlain(result[key])) {
                    result[key] = {};
                }

                result[key] = mergeOptions(result[key], value);
            });
        });

        return result;
    }

    /**
     * Player Component - Base class for all UI objects
     *
     * @file component.js
     */
    /**
     * Base class for all UI Components.
     * Components are UI objects which represent both a javascript object and an element
     * in the DOM. They can be children of other components, and can have
     * children themselves.
     *
     * Components can also use methods from {@link EventTarget}
     */

    var Component = function () {

        /**
         * A callback that is called when a component is ready. Does not have any
         * paramters and any callback value will be ignored.
         *
         * @callback Component~ReadyCallback
         * @this Component
         */

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         *
         * @param {Object[]} [options.children]
         *        An array of children objects to intialize this component with. Children objects have
         *        a name property that will be used if more than one component of the same type needs to be
         *        added.
         *
         * @param {Component~ReadyCallback} [ready]
         *        Function that gets called when the `Component` is ready.
         */
        function Component(player, options, ready) {
            classCallCheck(this, Component);


            // The component might be the player itself and we can't pass `this` to super
            if (!player && this.play) {
                this.player_ = player = this; // eslint-disable-line
            } else {
                this.player_ = player;
            }

            // Make a copy of prototype.options_ to protect against overriding defaults
            this.options_ = mergeOptions({}, this.options_);

            // Updated options with supplied options
            options = this.options_ = mergeOptions(this.options_, options);

            // Get ID from options or options element if one is supplied
            this.id_ = options.id || options.el && options.el.id;

            // If there was no ID from the options, generate one
            if (!this.id_) {
                // Don't require the player ID function in the case of mock players
                var id = player && player.id && player.id() || 'no_player';

                this.id_ = id + '_component_' + newGUID();
            }

            this.name_ = options.name || null;

            // Create element if one wasn't provided in options
            if (options.el) {
                this.el_ = options.el;
            } else if (options.createEl !== false) {
                this.el_ = this.createEl();
            }

            // Make this an evented object and use `el_`, if available, as its event bus
            evented(this, { eventBusKey: this.el_ ? 'el_' : null });
            stateful(this, this.constructor.defaultState);

            this.children_ = [];
            this.childIndex_ = {};
            this.childNameIndex_ = {};

            // Add any child components in options
            if (options.initChildren !== false) {
                this.initChildren();
            }

            this.ready(ready);
            // Don't want to trigger ready here or it will before init is actually
            // finished for all children that run this constructor

            if (options.reportTouchActivity !== false) {
                this.enableTouchActivity();
            }
        }

        /**
         * Dispose of the `Component` and all child components.
         *
         * @fires Component#dispose
         */


        Component.prototype.dispose = function dispose() {

            /**
             * Triggered when a `Component` is disposed.
             *
             * @event Component#dispose
             * @type {EventTarget~Event}
             *
             * @property {boolean} [bubbles=false]
             *           set to false so that the close event does not
             *           bubble up
             */
            this.trigger({ type: 'dispose', bubbles: false });

            // Dispose all children.
            if (this.children_) {
                for (var i = this.children_.length - 1; i >= 0; i--) {
                    if (this.children_[i].dispose) {
                        this.children_[i].dispose();
                    }
                }
            }

            // Delete child references
            this.children_ = null;
            this.childIndex_ = null;
            this.childNameIndex_ = null;

            if (this.el_) {
                // Remove element from DOM
                if (this.el_.parentNode) {
                    this.el_.parentNode.removeChild(this.el_);
                }

                removeData(this.el_);
                this.el_ = null;
            }
        };

        /**
         * Return the {@link Player} that the `Component` has attached to.
         *
         * @return {Player}
         *         The player that this `Component` has attached to.
         */


        Component.prototype.player = function player() {
            return this.player_;
        };

        /**
         * Deep merge of options objects with new options.
         * > Note: When both `obj` and `options` contain properties whose values are objects.
         *         The two properties get merged using {@link module:mergeOptions}
         *
         * @param {Object} obj
         *        The object that contains new options.
         *
         * @return {Object}
         *         A new object of `this.options_` and `obj` merged together.
         *
         * @deprecated since version 5
         */


        Component.prototype.options = function options(obj) {
            log$1.warn('this.options() has been deprecated and will be moved to the constructor in 6.0');

            if (!obj) {
                return this.options_;
            }

            this.options_ = mergeOptions(this.options_, obj);
            return this.options_;
        };

        /**
         * Get the `Component`s DOM element
         *
         * @return {Element}
         *         The DOM element for this `Component`.
         */


        Component.prototype.el = function el() {
            return this.el_;
        };

        /**
         * Create the `Component`s DOM element.
         *
         * @param {string} [tagName]
         *        Element's DOM node type. e.g. 'div'
         *
         * @param {Object} [properties]
         *        An object of properties that should be set.
         *
         * @param {Object} [attributes]
         *        An object of attributes that should be set.
         *
         * @return {Element}
         *         The element that gets created.
         */


        Component.prototype.createEl = function createEl$$1(tagName, properties, attributes) {
            return createEl(tagName, properties, attributes);
        };

        /**
         * Localize a string given the string in english.
         *
         * If tokens are provided, it'll try and run a simple token replacement on the provided string.
         * The tokens it loooks for look like `{1}` with the index being 1-indexed into the tokens array.
         *
         * If a `defaultValue` is provided, it'll use that over `string`,
         * if a value isn't found in provided language files.
         * This is useful if you want to have a descriptive key for token replacement
         * but have a succinct localized string and not require `en.json` to be included.
         *
         * Currently, it is used for the progress bar timing.
         * ```js
         * {
   *   "progress bar timing: currentTime={1} duration={2}": "{1} of {2}"
   * }
         * ```
         * It is then used like so:
         * ```js
         * this.localize('progress bar timing: currentTime={1} duration{2}',
         *               [this.player_.currentTime(), this.player_.duration()],
         *               '{1} of {2}');
         * ```
         *
         * Which outputs something like: `01:23 of 24:56`.
         *
         *
         * @param {string} string
         *        The string to localize and the key to lookup in the language files.
         * @param {string[]} [tokens]
         *        If the current item has token replacements, provide the tokens here.
         * @param {string} [defaultValue]
         *        Defaults to `string`. Can be a default value to use for token replacement
         *        if the lookup key is needed to be separate.
         *
         * @return {string}
         *         The localized string or if no localization exists the english string.
         */


        Component.prototype.localize = function localize(string, tokens) {
            var defaultValue = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : string;

            var code = this.player_.language && this.player_.language();
            var languages = this.player_.languages && this.player_.languages();
            var language = languages && languages[code];
            var primaryCode = code && code.split('-')[0];
            var primaryLang = languages && languages[primaryCode];

            var localizedString = defaultValue;

            if (language && language[string]) {
                localizedString = language[string];
            } else if (primaryLang && primaryLang[string]) {
                localizedString = primaryLang[string];
            }

            if (tokens) {
                localizedString = localizedString.replace(/\{(\d+)\}/g, function (match, index) {
                    var value = tokens[index - 1];
                    var ret = value;

                    if (typeof value === 'undefined') {
                        ret = match;
                    }

                    return ret;
                });
            }

            return localizedString;
        };

        /**
         * Return the `Component`s DOM element. This is where children get inserted.
         * This will usually be the the same as the element returned in {@link Component#el}.
         *
         * @return {Element}
         *         The content element for this `Component`.
         */


        Component.prototype.contentEl = function contentEl() {
            return this.contentEl_ || this.el_;
        };

        /**
         * Get this `Component`s ID
         *
         * @return {string}
         *         The id of this `Component`
         */


        Component.prototype.id = function id() {
            return this.id_;
        };

        /**
         * Get the `Component`s name. The name gets used to reference the `Component`
         * and is set during registration.
         *
         * @return {string}
         *         The name of this `Component`.
         */


        Component.prototype.name = function name() {
            return this.name_;
        };

        /**
         * Get an array of all child components
         *
         * @return {Array}
         *         The children
         */


        Component.prototype.children = function children() {
            return this.children_;
        };

        /**
         * Returns the child `Component` with the given `id`.
         *
         * @param {string} id
         *        The id of the child `Component` to get.
         *
         * @return {Component|undefined}
         *         The child `Component` with the given `id` or undefined.
         */


        Component.prototype.getChildById = function getChildById(id) {
            return this.childIndex_[id];
        };

        /**
         * Returns the child `Component` with the given `name`.
         *
         * @param {string} name
         *        The name of the child `Component` to get.
         *
         * @return {Component|undefined}
         *         The child `Component` with the given `name` or undefined.
         */


        Component.prototype.getChild = function getChild(name) {
            if (!name) {
                return;
            }

            name = toTitleCase(name);

            return this.childNameIndex_[name];
        };

        /**
         * Add a child `Component` inside the current `Component`.
         *
         *
         * @param {string|Component} child
         *        The name or instance of a child to add.
         *
         * @param {Object} [options={}]
         *        The key/value store of options that will get passed to children of
         *        the child.
         *
         * @param {number} [index=this.children_.length]
         *        The index to attempt to add a child into.
         *
         * @return {Component}
         *         The `Component` that gets added as a child. When using a string the
         *         `Component` will get created by this process.
         */


        Component.prototype.addChild = function addChild(child) {
            var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
            var index = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : this.children_.length;

            var component = void 0;
            var componentName = void 0;

            // If child is a string, create component with options
            if (typeof child === 'string') {
                componentName = toTitleCase(child);

                var componentClassName = options.componentClass || componentName;

                // Set name through options
                options.name = componentName;

                // Create a new object & element for this controls set
                // If there's no .player_, this is a player
                var ComponentClass = Component.getComponent(componentClassName);

                if (!ComponentClass) {
                    throw new Error('Component ' + componentClassName + ' does not exist');
                }

                // data stored directly on the videojs object may be
                // misidentified as a component to retain
                // backwards-compatibility with 4.x. check to make sure the
                // component class can be instantiated.
                if (typeof ComponentClass !== 'function') {
                    return null;
                }

                component = new ComponentClass(this.player_ || this, options);

                // child is a component instance
            } else {
                component = child;
            }

            this.children_.splice(index, 0, component);

            if (typeof component.id === 'function') {
                this.childIndex_[component.id()] = component;
            }

            // If a name wasn't used to create the component, check if we can use the
            // name function of the component
            componentName = componentName || component.name && toTitleCase(component.name());

            if (componentName) {
                this.childNameIndex_[componentName] = component;
            }

            // Add the UI object's element to the container div (box)
            // Having an element is not required
            if (typeof component.el === 'function' && component.el()) {
                var childNodes = this.contentEl().children;
                var refNode = childNodes[index] || null;

                this.contentEl().insertBefore(component.el(), refNode);
            }

            // Return so it can stored on parent object if desired.
            return component;
        };

        /**
         * Remove a child `Component` from this `Component`s list of children. Also removes
         * the child `Component`s element from this `Component`s element.
         *
         * @param {Component} component
         *        The child `Component` to remove.
         */


        Component.prototype.removeChild = function removeChild(component) {
            if (typeof component === 'string') {
                component = this.getChild(component);
            }

            if (!component || !this.children_) {
                return;
            }

            var childFound = false;

            for (var i = this.children_.length - 1; i >= 0; i--) {
                if (this.children_[i] === component) {
                    childFound = true;
                    this.children_.splice(i, 1);
                    break;
                }
            }

            if (!childFound) {
                return;
            }

            this.childIndex_[component.id()] = null;
            this.childNameIndex_[component.name()] = null;

            var compEl = component.el();

            if (compEl && compEl.parentNode === this.contentEl()) {
                this.contentEl().removeChild(component.el());
            }
        };

        /**
         * Add and initialize default child `Component`s based upon options.
         */


        Component.prototype.initChildren = function initChildren() {
            var _this = this;

            var children = this.options_.children;

            if (children) {
                // `this` is `parent`
                var parentOptions = this.options_;

                var handleAdd = function handleAdd(child) {
                    var name = child.name;
                    var opts = child.opts;

                    // Allow options for children to be set at the parent options
                    // e.g. videojs(id, { controlBar: false });
                    // instead of videojs(id, { children: { controlBar: false });
                    if (parentOptions[name] !== undefined) {
                        opts = parentOptions[name];
                    }

                    // Allow for disabling default components
                    // e.g. options['children']['posterImage'] = false
                    if (opts === false) {
                        return;
                    }

                    // Allow options to be passed as a simple boolean if no configuration
                    // is necessary.
                    if (opts === true) {
                        opts = {};
                    }

                    // We also want to pass the original player options
                    // to each component as well so they don't need to
                    // reach back into the player for options later.
                    opts.playerOptions = _this.options_.playerOptions;

                    // Create and add the child component.
                    // Add a direct reference to the child by name on the parent instance.
                    // If two of the same component are used, different names should be supplied
                    // for each
                    var newChild = _this.addChild(name, opts);

                    if (newChild) {
                        _this[name] = newChild;
                    }
                };

                // Allow for an array of children details to passed in the options
                var workingChildren = void 0;
                var Tech = Component.getComponent('Tech');

                if (Array.isArray(children)) {
                    workingChildren = children;
                } else {
                    workingChildren = Object.keys(children);
                }

                workingChildren
                // children that are in this.options_ but also in workingChildren  would
                // give us extra children we do not want. So, we want to filter them out.
                    .concat(Object.keys(this.options_).filter(function (child) {
                        return !workingChildren.some(function (wchild) {
                            if (typeof wchild === 'string') {
                                return child === wchild;
                            }
                            return child === wchild.name;
                        });
                    })).map(function (child) {
                    var name = void 0;
                    var opts = void 0;

                    if (typeof child === 'string') {
                        name = child;
                        opts = children[name] || _this.options_[name] || {};
                    } else {
                        name = child.name;
                        opts = child;
                    }

                    return { name: name, opts: opts };
                }).filter(function (child) {
                    // we have to make sure that child.name isn't in the techOrder since
                    // techs are registerd as Components but can't aren't compatible
                    // See https://github.com/videojs/video.js/issues/2772
                    var c = Component.getComponent(child.opts.componentClass || toTitleCase(child.name));

                    return c && !Tech.isTech(c);
                }).forEach(handleAdd);
            }
        };

        /**
         * Builds the default DOM class name. Should be overriden by sub-components.
         *
         * @return {string}
         *         The DOM class name for this object.
         *
         * @abstract
         */


        Component.prototype.buildCSSClass = function buildCSSClass() {
            // Child classes can include a function that does:
            // return 'CLASS NAME' + this._super();
            return '';
        };

        /**
         * Bind a listener to the component's ready state.
         * Different from event listeners in that if the ready event has already happened
         * it will trigger the function immediately.
         *
         * @return {Component}
         *         Returns itself; method can be chained.
         */


        Component.prototype.ready = function ready(fn) {
            var sync = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;

            if (fn) {
                if (this.isReady_) {
                    if (sync) {
                        fn.call(this);
                    } else {
                        // Call the function asynchronously by default for consistency
                        this.setTimeout(fn, 1);
                    }
                } else {
                    this.readyQueue_ = this.readyQueue_ || [];
                    this.readyQueue_.push(fn);
                }
            }
        };

        /**
         * Trigger all the ready listeners for this `Component`.
         *
         * @fires Component#ready
         */


        Component.prototype.triggerReady = function triggerReady() {
            this.isReady_ = true;

            // Ensure ready is triggerd asynchronously
            this.setTimeout(function () {
                var readyQueue = this.readyQueue_;

                // Reset Ready Queue
                this.readyQueue_ = [];

                if (readyQueue && readyQueue.length > 0) {
                    readyQueue.forEach(function (fn) {
                        fn.call(this);
                    }, this);
                }

                // Allow for using event listeners also
                /**
                 * Triggered when a `Component` is ready.
                 *
                 * @event Component#ready
                 * @type {EventTarget~Event}
                 */
                this.trigger('ready');
            }, 1);
        };

        /**
         * Find a single DOM element matching a `selector`. This can be within the `Component`s
         * `contentEl()` or another custom context.
         *
         * @param {string} selector
         *        A valid CSS selector, which will be passed to `querySelector`.
         *
         * @param {Element|string} [context=this.contentEl()]
         *        A DOM element within which to query. Can also be a selector string in
         *        which case the first matching element will get used as context. If
         *        missing `this.contentEl()` gets used. If  `this.contentEl()` returns
         *        nothing it falls back to `document`.
         *
         * @return {Element|null}
         *         the dom element that was found, or null
         *
         * @see [Information on CSS Selectors](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Getting_Started/Selectors)
         */


        Component.prototype.$ = function $$$1(selector, context) {
            return $(selector, context || this.contentEl());
        };

        /**
         * Finds all DOM element matching a `selector`. This can be within the `Component`s
         * `contentEl()` or another custom context.
         *
         * @param {string} selector
         *        A valid CSS selector, which will be passed to `querySelectorAll`.
         *
         * @param {Element|string} [context=this.contentEl()]
         *        A DOM element within which to query. Can also be a selector string in
         *        which case the first matching element will get used as context. If
         *        missing `this.contentEl()` gets used. If  `this.contentEl()` returns
         *        nothing it falls back to `document`.
         *
         * @return {NodeList}
         *         a list of dom elements that were found
         *
         * @see [Information on CSS Selectors](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Getting_Started/Selectors)
         */


        Component.prototype.$$ = function $$$$1(selector, context) {
            return $$(selector, context || this.contentEl());
        };

        /**
         * Check if a component's element has a CSS class name.
         *
         * @param {string} classToCheck
         *        CSS class name to check.
         *
         * @return {boolean}
         *         - True if the `Component` has the class.
         *         - False if the `Component` does not have the class`
         */


        Component.prototype.hasClass = function hasClass$$1(classToCheck) {
            return hasClass(this.el_, classToCheck);
        };

        /**
         * Add a CSS class name to the `Component`s element.
         *
         * @param {string} classToAdd
         *        CSS class name to add
         */


        Component.prototype.addClass = function addClass$$1(classToAdd) {
            addClass(this.el_, classToAdd);
        };

        /**
         * Remove a CSS class name from the `Component`s element.
         *
         * @param {string} classToRemove
         *        CSS class name to remove
         */


        Component.prototype.removeClass = function removeClass$$1(classToRemove) {
            removeClass(this.el_, classToRemove);
        };

        /**
         * Add or remove a CSS class name from the component's element.
         * - `classToToggle` gets added when {@link Component#hasClass} would return false.
         * - `classToToggle` gets removed when {@link Component#hasClass} would return true.
         *
         * @param  {string} classToToggle
         *         The class to add or remove based on (@link Component#hasClass}
         *
         * @param  {boolean|Dom~predicate} [predicate]
         *         An {@link Dom~predicate} function or a boolean
         */


        Component.prototype.toggleClass = function toggleClass$$1(classToToggle, predicate) {
            toggleClass(this.el_, classToToggle, predicate);
        };

        /**
         * Show the `Component`s element if it is hidden by removing the
         * 'vjs-hidden' class name from it.
         */


        Component.prototype.show = function show() {
            this.removeClass('vjs-hidden');
        };

        /**
         * Hide the `Component`s element if it is currently showing by adding the
         * 'vjs-hidden` class name to it.
         */


        Component.prototype.hide = function hide() {
            this.addClass('vjs-hidden');
        };

        /**
         * Lock a `Component`s element in its visible state by adding the 'vjs-lock-showing'
         * class name to it. Used during fadeIn/fadeOut.
         *
         * @private
         */


        Component.prototype.lockShowing = function lockShowing() {
            this.addClass('vjs-lock-showing');
        };

        /**
         * Unlock a `Component`s element from its visible state by removing the 'vjs-lock-showing'
         * class name from it. Used during fadeIn/fadeOut.
         *
         * @private
         */


        Component.prototype.unlockShowing = function unlockShowing() {
            this.removeClass('vjs-lock-showing');
        };

        /**
         * Get the value of an attribute on the `Component`s element.
         *
         * @param {string} attribute
         *        Name of the attribute to get the value from.
         *
         * @return {string|null}
         *         - The value of the attribute that was asked for.
         *         - Can be an empty string on some browsers if the attribute does not exist
         *           or has no value
         *         - Most browsers will return null if the attibute does not exist or has
         *           no value.
         *
         * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/getAttribute}
         */


        Component.prototype.getAttribute = function getAttribute$$1(attribute) {
            return getAttribute(this.el_, attribute);
        };

        /**
         * Set the value of an attribute on the `Component`'s element
         *
         * @param {string} attribute
         *        Name of the attribute to set.
         *
         * @param {string} value
         *        Value to set the attribute to.
         *
         * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/setAttribute}
         */


        Component.prototype.setAttribute = function setAttribute$$1(attribute, value) {
            setAttribute(this.el_, attribute, value);
        };

        /**
         * Remove an attribute from the `Component`s element.
         *
         * @param {string} attribute
         *        Name of the attribute to remove.
         *
         * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/removeAttribute}
         */


        Component.prototype.removeAttribute = function removeAttribute$$1(attribute) {
            removeAttribute(this.el_, attribute);
        };

        /**
         * Get or set the width of the component based upon the CSS styles.
         * See {@link Component#dimension} for more detailed information.
         *
         * @param {number|string} [num]
         *        The width that you want to set postfixed with '%', 'px' or nothing.
         *
         * @param {boolean} [skipListeners]
         *        Skip the componentresize event trigger
         *
         * @return {number|string}
         *         The width when getting, zero if there is no width. Can be a string
         *           postpixed with '%' or 'px'.
         */


        Component.prototype.width = function width(num, skipListeners) {
            return this.dimension('width', num, skipListeners);
        };

        /**
         * Get or set the height of the component based upon the CSS styles.
         * See {@link Component#dimension} for more detailed information.
         *
         * @param {number|string} [num]
         *        The height that you want to set postfixed with '%', 'px' or nothing.
         *
         * @param {boolean} [skipListeners]
         *        Skip the componentresize event trigger
         *
         * @return {number|string}
         *         The width when getting, zero if there is no width. Can be a string
         *         postpixed with '%' or 'px'.
         */


        Component.prototype.height = function height(num, skipListeners) {
            return this.dimension('height', num, skipListeners);
        };

        /**
         * Set both the width and height of the `Component` element at the same time.
         *
         * @param  {number|string} width
         *         Width to set the `Component`s element to.
         *
         * @param  {number|string} height
         *         Height to set the `Component`s element to.
         */


        Component.prototype.dimensions = function dimensions(width, height) {
            // Skip componentresize listeners on width for optimization
            this.width(width, true);
            this.height(height);
        };

        /**
         * Get or set width or height of the `Component` element. This is the shared code
         * for the {@link Component#width} and {@link Component#height}.
         *
         * Things to know:
         * - If the width or height in an number this will return the number postfixed with 'px'.
         * - If the width/height is a percent this will return the percent postfixed with '%'
         * - Hidden elements have a width of 0 with `window.getComputedStyle`. This function
         *   defaults to the `Component`s `style.width` and falls back to `window.getComputedStyle`.
         *   See [this]{@link http://www.foliotek.com/devblog/getting-the-width-of-a-hidden-element-with-jquery-using-width/}
         *   for more information
         * - If you want the computed style of the component, use {@link Component#currentWidth}
         *   and {@link {Component#currentHeight}
         *
         * @fires Component#componentresize
         *
         * @param {string} widthOrHeight
         8        'width' or 'height'
         *
         * @param  {number|string} [num]
         8         New dimension
         *
         * @param  {boolean} [skipListeners]
         *         Skip componentresize event trigger
         *
         * @return {number}
         *         The dimension when getting or 0 if unset
         */


        Component.prototype.dimension = function dimension(widthOrHeight, num, skipListeners) {
            if (num !== undefined) {
                // Set to zero if null or literally NaN (NaN !== NaN)
                if (num === null || num !== num) {
                    num = 0;
                }

                // Check if using css width/height (% or px) and adjust
                if (('' + num).indexOf('%') !== -1 || ('' + num).indexOf('px') !== -1) {
                    this.el_.style[widthOrHeight] = num;
                } else if (num === 'auto') {
                    this.el_.style[widthOrHeight] = '';
                } else {
                    this.el_.style[widthOrHeight] = num + 'px';
                }

                // skipListeners allows us to avoid triggering the resize event when setting both width and height
                if (!skipListeners) {
                    /**
                     * Triggered when a component is resized.
                     *
                     * @event Component#componentresize
                     * @type {EventTarget~Event}
                     */
                    this.trigger('componentresize');
                }

                return;
            }

            // Not setting a value, so getting it
            // Make sure element exists
            if (!this.el_) {
                return 0;
            }

            // Get dimension value from style
            var val = this.el_.style[widthOrHeight];
            var pxIndex = val.indexOf('px');

            if (pxIndex !== -1) {
                // Return the pixel value with no 'px'
                return parseInt(val.slice(0, pxIndex), 10);
            }

            // No px so using % or no style was set, so falling back to offsetWidth/height
            // If component has display:none, offset will return 0
            // TODO: handle display:none and no dimension style using px
            return parseInt(this.el_['offset' + toTitleCase(widthOrHeight)], 10);
        };

        /**
         * Get the width or the height of the `Component` elements computed style. Uses
         * `window.getComputedStyle`.
         *
         * @param {string} widthOrHeight
         *        A string containing 'width' or 'height'. Whichever one you want to get.
         *
         * @return {number}
         *         The dimension that gets asked for or 0 if nothing was set
         *         for that dimension.
         */


        Component.prototype.currentDimension = function currentDimension(widthOrHeight) {
            var computedWidthOrHeight = 0;

            if (widthOrHeight !== 'width' && widthOrHeight !== 'height') {
                throw new Error('currentDimension only accepts width or height value');
            }

            if (typeof window_1.getComputedStyle === 'function') {
                var computedStyle = window_1.getComputedStyle(this.el_);

                computedWidthOrHeight = computedStyle.getPropertyValue(widthOrHeight) || computedStyle[widthOrHeight];
            }

            // remove 'px' from variable and parse as integer
            computedWidthOrHeight = parseFloat(computedWidthOrHeight);

            // if the computed value is still 0, it's possible that the browser is lying
            // and we want to check the offset values.
            // This code also runs on IE8 and wherever getComputedStyle doesn't exist.
            if (computedWidthOrHeight === 0) {
                var rule = 'offset' + toTitleCase(widthOrHeight);

                computedWidthOrHeight = this.el_[rule];
            }

            return computedWidthOrHeight;
        };

        /**
         * An object that contains width and height values of the `Component`s
         * computed style. Uses `window.getComputedStyle`.
         *
         * @typedef {Object} Component~DimensionObject
         *
         * @property {number} width
         *           The width of the `Component`s computed style.
         *
         * @property {number} height
         *           The height of the `Component`s computed style.
         */

        /**
         * Get an object that contains width and height values of the `Component`s
         * computed style.
         *
         * @return {Component~DimensionObject}
         *         The dimensions of the components element
         */


        Component.prototype.currentDimensions = function currentDimensions() {
            return {
                width: this.currentDimension('width'),
                height: this.currentDimension('height')
            };
        };

        /**
         * Get the width of the `Component`s computed style. Uses `window.getComputedStyle`.
         *
         * @return {number} width
         *           The width of the `Component`s computed style.
         */


        Component.prototype.currentWidth = function currentWidth() {
            return this.currentDimension('width');
        };

        /**
         * Get the height of the `Component`s computed style. Uses `window.getComputedStyle`.
         *
         * @return {number} height
         *           The height of the `Component`s computed style.
         */


        Component.prototype.currentHeight = function currentHeight() {
            return this.currentDimension('height');
        };

        /**
         * Set the focus to this component
         */


        Component.prototype.focus = function focus() {
            this.el_.focus();
        };

        /**
         * Remove the focus from this component
         */


        Component.prototype.blur = function blur() {
            this.el_.blur();
        };

        /**
         * Emit a 'tap' events when touch event support gets detected. This gets used to
         * support toggling the controls through a tap on the video. They get enabled
         * because every sub-component would have extra overhead otherwise.
         *
         * @private
         * @fires Component#tap
         * @listens Component#touchstart
         * @listens Component#touchmove
         * @listens Component#touchleave
         * @listens Component#touchcancel
         * @listens Component#touchend
         */


        Component.prototype.emitTapEvents = function emitTapEvents() {
            // Track the start time so we can determine how long the touch lasted
            var touchStart = 0;
            var firstTouch = null;

            // Maximum movement allowed during a touch event to still be considered a tap
            // Other popular libs use anywhere from 2 (hammer.js) to 15,
            // so 10 seems like a nice, round number.
            var tapMovementThreshold = 10;

            // The maximum length a touch can be while still being considered a tap
            var touchTimeThreshold = 200;

            var couldBeTap = void 0;

            this.on('touchstart', function (event) {
                // If more than one finger, don't consider treating this as a click
                if (event.touches.length === 1) {
                    // Copy pageX/pageY from the object
                    firstTouch = {
                        pageX: event.touches[0].pageX,
                        pageY: event.touches[0].pageY
                    };
                    // Record start time so we can detect a tap vs. "touch and hold"
                    touchStart = new Date().getTime();
                    // Reset couldBeTap tracking
                    couldBeTap = true;
                }
            });

            this.on('touchmove', function (event) {
                // If more than one finger, don't consider treating this as a click
                if (event.touches.length > 1) {
                    couldBeTap = false;
                } else if (firstTouch) {
                    // Some devices will throw touchmoves for all but the slightest of taps.
                    // So, if we moved only a small distance, this could still be a tap
                    var xdiff = event.touches[0].pageX - firstTouch.pageX;
                    var ydiff = event.touches[0].pageY - firstTouch.pageY;
                    var touchDistance = Math.sqrt(xdiff * xdiff + ydiff * ydiff);

                    if (touchDistance > tapMovementThreshold) {
                        couldBeTap = false;
                    }
                }
            });

            var noTap = function noTap() {
                couldBeTap = false;
            };

            // TODO: Listen to the original target. http://youtu.be/DujfpXOKUp8?t=13m8s
            this.on('touchleave', noTap);
            this.on('touchcancel', noTap);

            // When the touch ends, measure how long it took and trigger the appropriate
            // event
            this.on('touchend', function (event) {
                firstTouch = null;
                // Proceed only if the touchmove/leave/cancel event didn't happen
                if (couldBeTap === true) {
                    // Measure how long the touch lasted
                    var touchTime = new Date().getTime() - touchStart;

                    // Make sure the touch was less than the threshold to be considered a tap
                    if (touchTime < touchTimeThreshold) {
                        // Don't let browser turn this into a click
                        event.preventDefault();
                        /**
                         * Triggered when a `Component` is tapped.
                         *
                         * @event Component#tap
                         * @type {EventTarget~Event}
                         */
                        this.trigger('tap');
                        // It may be good to copy the touchend event object and change the
                        // type to tap, if the other event properties aren't exact after
                        // Events.fixEvent runs (e.g. event.target)
                    }
                }
            });
        };

        /**
         * This function reports user activity whenever touch events happen. This can get
         * turned off by any sub-components that wants touch events to act another way.
         *
         * Report user touch activity when touch events occur. User activity gets used to
         * determine when controls should show/hide. It is simple when it comes to mouse
         * events, because any mouse event should show the controls. So we capture mouse
         * events that bubble up to the player and report activity when that happens.
         * With touch events it isn't as easy as `touchstart` and `touchend` toggle player
         * controls. So touch events can't help us at the player level either.
         *
         * User activity gets checked asynchronously. So what could happen is a tap event
         * on the video turns the controls off. Then the `touchend` event bubbles up to
         * the player. Which, if it reported user activity, would turn the controls right
         * back on. We also don't want to completely block touch events from bubbling up.
         * Furthermore a `touchmove` event and anything other than a tap, should not turn
         * controls back on.
         *
         * @listens Component#touchstart
         * @listens Component#touchmove
         * @listens Component#touchend
         * @listens Component#touchcancel
         */


        Component.prototype.enableTouchActivity = function enableTouchActivity() {
            // Don't continue if the root player doesn't support reporting user activity
            if (!this.player() || !this.player().reportUserActivity) {
                return;
            }

            // listener for reporting that the user is active
            var report = bind(this.player(), this.player().reportUserActivity);

            var touchHolding = void 0;

            this.on('touchstart', function () {
                report();
                // For as long as the they are touching the device or have their mouse down,
                // we consider them active even if they're not moving their finger or mouse.
                // So we want to continue to update that they are active
                this.clearInterval(touchHolding);
                // report at the same interval as activityCheck
                touchHolding = this.setInterval(report, 250);
            });

            var touchEnd = function touchEnd(event) {
                report();
                // stop the interval that maintains activity if the touch is holding
                this.clearInterval(touchHolding);
            };

            this.on('touchmove', report);
            this.on('touchend', touchEnd);
            this.on('touchcancel', touchEnd);
        };

        /**
         * A callback that has no parameters and is bound into `Component`s context.
         *
         * @callback Component~GenericCallback
         * @this Component
         */

        /**
         * Creates a function that runs after an `x` millisecond timeout. This function is a
         * wrapper around `window.setTimeout`. There are a few reasons to use this one
         * instead though:
         * 1. It gets cleared via  {@link Component#clearTimeout} when
         *    {@link Component#dispose} gets called.
         * 2. The function callback will gets turned into a {@link Component~GenericCallback}
         *
         * > Note: You can use `window.clearTimeout` on the id returned by this function. This
         *         will cause its dispose listener not to get cleaned up! Please use
         *         {@link Component#clearTimeout} or {@link Component#dispose}.
         *
         * @param {Component~GenericCallback} fn
         *        The function that will be run after `timeout`.
         *
         * @param {number} timeout
         *        Timeout in milliseconds to delay before executing the specified function.
         *
         * @return {number}
         *         Returns a timeout ID that gets used to identify the timeout. It can also
         *         get used in {@link Component#clearTimeout} to clear the timeout that
         *         was set.
         *
         * @listens Component#dispose
         * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/setTimeout}
         */


        Component.prototype.setTimeout = function setTimeout(fn, timeout) {
            fn = bind(this, fn);

            var timeoutId = window_1.setTimeout(fn, timeout);
            var disposeFn = function disposeFn() {
                this.clearTimeout(timeoutId);
            };

            disposeFn.guid = 'vjs-timeout-' + timeoutId;

            this.on('dispose', disposeFn);

            return timeoutId;
        };

        /**
         * Clears a timeout that gets created via `window.setTimeout` or
         * {@link Component#setTimeout}. If you set a timeout via {@link Component#setTimeout}
         * use this function instead of `window.clearTimout`. If you don't your dispose
         * listener will not get cleaned up until {@link Component#dispose}!
         *
         * @param {number} timeoutId
         *        The id of the timeout to clear. The return value of
         *        {@link Component#setTimeout} or `window.setTimeout`.
         *
         * @return {number}
         *         Returns the timeout id that was cleared.
         *
         * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/clearTimeout}
         */


        Component.prototype.clearTimeout = function clearTimeout(timeoutId) {
            window_1.clearTimeout(timeoutId);

            var disposeFn = function disposeFn() {};

            disposeFn.guid = 'vjs-timeout-' + timeoutId;

            this.off('dispose', disposeFn);

            return timeoutId;
        };

        /**
         * Creates a function that gets run every `x` milliseconds. This function is a wrapper
         * around `window.setInterval`. There are a few reasons to use this one instead though.
         * 1. It gets cleared via  {@link Component#clearInterval} when
         *    {@link Component#dispose} gets called.
         * 2. The function callback will be a {@link Component~GenericCallback}
         *
         * @param {Component~GenericCallback} fn
         *        The function to run every `x` seconds.
         *
         * @param {number} interval
         *        Execute the specified function every `x` milliseconds.
         *
         * @return {number}
         *         Returns an id that can be used to identify the interval. It can also be be used in
         *         {@link Component#clearInterval} to clear the interval.
         *
         * @listens Component#dispose
         * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/setInterval}
         */


        Component.prototype.setInterval = function setInterval(fn, interval) {
            fn = bind(this, fn);

            var intervalId = window_1.setInterval(fn, interval);

            var disposeFn = function disposeFn() {
                this.clearInterval(intervalId);
            };

            disposeFn.guid = 'vjs-interval-' + intervalId;

            this.on('dispose', disposeFn);

            return intervalId;
        };

        /**
         * Clears an interval that gets created via `window.setInterval` or
         * {@link Component#setInterval}. If you set an inteval via {@link Component#setInterval}
         * use this function instead of `window.clearInterval`. If you don't your dispose
         * listener will not get cleaned up until {@link Component#dispose}!
         *
         * @param {number} intervalId
         *        The id of the interval to clear. The return value of
         *        {@link Component#setInterval} or `window.setInterval`.
         *
         * @return {number}
         *         Returns the interval id that was cleared.
         *
         * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/clearInterval}
         */


        Component.prototype.clearInterval = function clearInterval(intervalId) {
            window_1.clearInterval(intervalId);

            var disposeFn = function disposeFn() {};

            disposeFn.guid = 'vjs-interval-' + intervalId;

            this.off('dispose', disposeFn);

            return intervalId;
        };

        /**
         * Queues up a callback to be passed to requestAnimationFrame (rAF), but
         * with a few extra bonuses:
         *
         * - Supports browsers that do not support rAF by falling back to
         *   {@link Component#setTimeout}.
         *
         * - The callback is turned into a {@link Component~GenericCallback} (i.e.
         *   bound to the component).
         *
         * - Automatic cancellation of the rAF callback is handled if the component
         *   is disposed before it is called.
         *
         * @param  {Component~GenericCallback} fn
         *         A function that will be bound to this component and executed just
         *         before the browser's next repaint.
         *
         * @return {number}
         *         Returns an rAF ID that gets used to identify the timeout. It can
         *         also be used in {@link Component#cancelAnimationFrame} to cancel
         *         the animation frame callback.
         *
         * @listens Component#dispose
         * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/window/requestAnimationFrame}
         */


        Component.prototype.requestAnimationFrame = function requestAnimationFrame(fn) {
            var _this2 = this;

            if (this.supportsRaf_) {
                fn = bind(this, fn);

                var id = window_1.requestAnimationFrame(fn);
                var disposeFn = function disposeFn() {
                    return _this2.cancelAnimationFrame(id);
                };

                disposeFn.guid = 'vjs-raf-' + id;
                this.on('dispose', disposeFn);

                return id;
            }

            // Fall back to using a timer.
            return this.setTimeout(fn, 1000 / 60);
        };

        /**
         * Cancels a queued callback passed to {@link Component#requestAnimationFrame}
         * (rAF).
         *
         * If you queue an rAF callback via {@link Component#requestAnimationFrame},
         * use this function instead of `window.cancelAnimationFrame`. If you don't,
         * your dispose listener will not get cleaned up until {@link Component#dispose}!
         *
         * @param {number} id
         *        The rAF ID to clear. The return value of {@link Component#requestAnimationFrame}.
         *
         * @return {number}
         *         Returns the rAF ID that was cleared.
         *
         * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/window/cancelAnimationFrame}
         */


        Component.prototype.cancelAnimationFrame = function cancelAnimationFrame(id) {
            if (this.supportsRaf_) {
                window_1.cancelAnimationFrame(id);

                var disposeFn = function disposeFn() {};

                disposeFn.guid = 'vjs-raf-' + id;

                this.off('dispose', disposeFn);

                return id;
            }

            // Fall back to using a timer.
            return this.clearTimeout(id);
        };

        /**
         * Register a `Component` with `videojs` given the name and the component.
         *
         * > NOTE: {@link Tech}s should not be registered as a `Component`. {@link Tech}s
         *         should be registered using {@link Tech.registerTech} or
         *         {@link videojs:videojs.registerTech}.
         *
         * > NOTE: This function can also be seen on videojs as
         *         {@link videojs:videojs.registerComponent}.
         *
         * @param {string} name
         *        The name of the `Component` to register.
         *
         * @param {Component} ComponentToRegister
         *        The `Component` class to register.
         *
         * @return {Component}
         *         The `Component` that was registered.
         */


        Component.registerComponent = function registerComponent(name, ComponentToRegister) {
            if (typeof name !== 'string' || !name) {
                throw new Error('Illegal component name, "' + name + '"; must be a non-empty string.');
            }

            var Tech = Component.getComponent('Tech');

            // We need to make sure this check is only done if Tech has been registered.
            var isTech = Tech && Tech.isTech(ComponentToRegister);
            var isComp = Component === ComponentToRegister || Component.prototype.isPrototypeOf(ComponentToRegister.prototype);

            if (isTech || !isComp) {
                var reason = void 0;

                if (isTech) {
                    reason = 'techs must be registered using Tech.registerTech()';
                } else {
                    reason = 'must be a Component subclass';
                }

                throw new Error('Illegal component, "' + name + '"; ' + reason + '.');
            }

            name = toTitleCase(name);

            if (!Component.components_) {
                Component.components_ = {};
            }

            var Player = Component.getComponent('Player');

            if (name === 'Player' && Player && Player.players) {
                var players = Player.players;
                var playerNames = Object.keys(players);

                // If we have players that were disposed, then their name will still be
                // in Players.players. So, we must loop through and verify that the value
                // for each item is not null. This allows registration of the Player component
                // after all players have been disposed or before any were created.
                if (players && playerNames.length > 0 && playerNames.map(function (pname) {
                        return players[pname];
                    }).every(Boolean)) {
                    throw new Error('Can not register Player component after player has been created.');
                }
            }

            Component.components_[name] = ComponentToRegister;

            return ComponentToRegister;
        };

        /**
         * Get a `Component` based on the name it was registered with.
         *
         * @param {string} name
         *        The Name of the component to get.
         *
         * @return {Component}
         *         The `Component` that got registered under the given name.
         *
         * @deprecated In `videojs` 6 this will not return `Component`s that were not
         *             registered using {@link Component.registerComponent}. Currently we
         *             check the global `videojs` object for a `Component` name and
         *             return that if it exists.
         */


        Component.getComponent = function getComponent(name) {
            if (!name) {
                return;
            }

            name = toTitleCase(name);

            if (Component.components_ && Component.components_[name]) {
                return Component.components_[name];
            }
        };

        return Component;
    }();

    /**
     * Whether or not this component supports `requestAnimationFrame`.
     *
     * This is exposed primarily for testing purposes.
     *
     * @private
     * @type {Boolean}
     */


    Component.prototype.supportsRaf_ = typeof window_1.requestAnimationFrame === 'function' && typeof window_1.cancelAnimationFrame === 'function';

    Component.registerComponent('Component', Component);

    /**
     * @file time-ranges.js
     * @module time-ranges
     */

    /**
     * Returns the time for the specified index at the start or end
     * of a TimeRange object.
     *
     * @function time-ranges:indexFunction
     *
     * @param {number} [index=0]
     *        The range number to return the time for.
     *
     * @return {number}
     *         The time that offset at the specified index.
     *
     * @depricated index must be set to a value, in the future this will throw an error.
     */

    /**
     * An object that contains ranges of time for various reasons.
     *
     * @typedef {Object} TimeRange
     *
     * @property {number} length
     *           The number of time ranges represented by this Object
     *
     * @property {time-ranges:indexFunction} start
     *           Returns the time offset at which a specified time range begins.
     *
     * @property {time-ranges:indexFunction} end
     *           Returns the time offset at which a specified time range begins.
     *
     * @see https://developer.mozilla.org/en-US/docs/Web/API/TimeRanges
     */

    /**
     * Check if any of the time ranges are over the maximum index.
     *
     * @param {string} fnName
     *        The function name to use for logging
     *
     * @param {number} index
     *        The index to check
     *
     * @param {number} maxIndex
     *        The maximum possible index
     *
     * @throws {Error} if the timeRanges provided are over the maxIndex
     */
    function rangeCheck(fnName, index, maxIndex) {
        if (typeof index !== 'number' || index < 0 || index > maxIndex) {
            throw new Error('Failed to execute \'' + fnName + '\' on \'TimeRanges\': The index provided (' + index + ') is non-numeric or out of bounds (0-' + maxIndex + ').');
        }
    }

    /**
     * Check if any of the time ranges are over the maximum index.
     *
     * @param {string} fnName
     *        The function name to use for logging
     *
     * @param {string} valueIndex
     *        The proprety that should be used to get the time. should be 'start' or 'end'
     *
     * @param {Array} ranges
     *        An array of time ranges
     *
     * @param {Array} [rangeIndex=0]
     *        The index to start the search at
     *
     * @return {number}
     *         The time that offset at the specified index.
     *
     *
     * @depricated rangeIndex must be set to a value, in the future this will throw an error.
     * @throws {Error} if rangeIndex is more than the length of ranges
     */
    function getRange(fnName, valueIndex, ranges, rangeIndex) {
        rangeCheck(fnName, rangeIndex, ranges.length - 1);
        return ranges[rangeIndex][valueIndex];
    }

    /**
     * Create a time range object givent ranges of time.
     *
     * @param {Array} [ranges]
     *        An array of time ranges.
     */
    function createTimeRangesObj(ranges) {
        if (ranges === undefined || ranges.length === 0) {
            return {
                length: 0,
                start: function start() {
                    throw new Error('This TimeRanges object is empty');
                },
                end: function end() {
                    throw new Error('This TimeRanges object is empty');
                }
            };
        }
        return {
            length: ranges.length,
            start: getRange.bind(null, 'start', 0, ranges),
            end: getRange.bind(null, 'end', 1, ranges)
        };
    }

    /**
     * Should create a fake `TimeRange` object which mimics an HTML5 time range instance.
     *
     * @param {number|Array} start
     *        The start of a single range or an array of ranges
     *
     * @param {number} end
     *        The end of a single range.
     *
     * @private
     */
    function createTimeRanges(start, end) {
        if (Array.isArray(start)) {
            return createTimeRangesObj(start);
        } else if (start === undefined || end === undefined) {
            return createTimeRangesObj();
        }
        return createTimeRangesObj([[start, end]]);
    }

    /**
     * @file buffer.js
     * @module buffer
     */
    /**
     * Compute the percentage of the media that has been buffered.
     *
     * @param {TimeRange} buffered
     *        The current `TimeRange` object representing buffered time ranges
     *
     * @param {number} duration
     *        Total duration of the media
     *
     * @return {number}
     *         Percent buffered of the total duration in decimal form.
     */
    function bufferedPercent(buffered, duration) {
        var bufferedDuration = 0;
        var start = void 0;
        var end = void 0;

        if (!duration) {
            return 0;
        }

        if (!buffered || !buffered.length) {
            buffered = createTimeRanges(0, 0);
        }

        for (var i = 0; i < buffered.length; i++) {
            start = buffered.start(i);
            end = buffered.end(i);

            // buffered end can be bigger than duration by a very small fraction
            if (end > duration) {
                end = duration;
            }

            bufferedDuration += end - start;
        }

        return bufferedDuration / duration;
    }

    /**
     * @file fullscreen-api.js
     * @module fullscreen-api
     * @private
     */
    /**
     * Store the browser-specific methods for the fullscreen API.
     *
     * @type {Object}
     * @see [Specification]{@link https://fullscreen.spec.whatwg.org}
     * @see [Map Approach From Screenfull.js]{@link https://github.com/sindresorhus/screenfull.js}
     */
    var FullscreenApi = {};

// browser API methods
    var apiMap = [['requestFullscreen', 'exitFullscreen', 'fullscreenElement', 'fullscreenEnabled', 'fullscreenchange', 'fullscreenerror'],
// WebKit
        ['webkitRequestFullscreen', 'webkitExitFullscreen', 'webkitFullscreenElement', 'webkitFullscreenEnabled', 'webkitfullscreenchange', 'webkitfullscreenerror'],
// Old WebKit (Safari 5.1)
        ['webkitRequestFullScreen', 'webkitCancelFullScreen', 'webkitCurrentFullScreenElement', 'webkitCancelFullScreen', 'webkitfullscreenchange', 'webkitfullscreenerror'],
// Mozilla
        ['mozRequestFullScreen', 'mozCancelFullScreen', 'mozFullScreenElement', 'mozFullScreenEnabled', 'mozfullscreenchange', 'mozfullscreenerror'],
// Microsoft
        ['msRequestFullscreen', 'msExitFullscreen', 'msFullscreenElement', 'msFullscreenEnabled', 'MSFullscreenChange', 'MSFullscreenError']];

    var specApi = apiMap[0];
    var browserApi = void 0;

// determine the supported set of functions
    for (var i = 0; i < apiMap.length; i++) {
        // check for exitFullscreen function
        if (apiMap[i][1] in document_1) {
            browserApi = apiMap[i];
            break;
        }
    }

// map the browser API names to the spec API names
    if (browserApi) {
        for (var _i = 0; _i < browserApi.length; _i++) {
            FullscreenApi[specApi[_i]] = browserApi[_i];
        }
    }

    /**
     * @file media-error.js
     */
    /**
     * A Custom `MediaError` class which mimics the standard HTML5 `MediaError` class.
     *
     * @param {number|string|Object|MediaError} value
     *        This can be of multiple types:
     *        - number: should be a standard error code
     *        - string: an error message (the code will be 0)
     *        - Object: arbitrary properties
     *        - `MediaError` (native): used to populate a video.js `MediaError` object
     *        - `MediaError` (video.js): will return itself if it's already a
     *          video.js `MediaError` object.
     *
     * @see [MediaError Spec]{@link https://dev.w3.org/html5/spec-author-view/video.html#mediaerror}
     * @see [Encrypted MediaError Spec]{@link https://www.w3.org/TR/2013/WD-encrypted-media-20130510/#error-codes}
     *
     * @class MediaError
     */
    function MediaError(value) {

        // Allow redundant calls to this constructor to avoid having `instanceof`
        // checks peppered around the code.
        if (value instanceof MediaError) {
            return value;
        }

        if (typeof value === 'number') {
            this.code = value;
        } else if (typeof value === 'string') {
            // default code is zero, so this is a custom error
            this.message = value;
        } else if (isObject(value)) {

            // We assign the `code` property manually because native `MediaError` objects
            // do not expose it as an own/enumerable property of the object.
            if (typeof value.code === 'number') {
                this.code = value.code;
            }

            assign(this, value);
        }

        if (!this.message) {
            this.message = MediaError.defaultMessages[this.code] || '';
        }
    }

    /**
     * The error code that refers two one of the defined `MediaError` types
     *
     * @type {Number}
     */
    MediaError.prototype.code = 0;

    /**
     * An optional message that to show with the error. Message is not part of the HTML5
     * video spec but allows for more informative custom errors.
     *
     * @type {String}
     */
    MediaError.prototype.message = '';

    /**
     * An optional status code that can be set by plugins to allow even more detail about
     * the error. For example a plugin might provide a specific HTTP status code and an
     * error message for that code. Then when the plugin gets that error this class will
     * know how to display an error message for it. This allows a custom message to show
     * up on the `Player` error overlay.
     *
     * @type {Array}
     */
    MediaError.prototype.status = null;

    /**
     * Errors indexed by the W3C standard. The order **CANNOT CHANGE**! See the
     * specification listed under {@link MediaError} for more information.
     *
     * @enum {array}
     * @readonly
     * @property {string} 0 - MEDIA_ERR_CUSTOM
     * @property {string} 1 - MEDIA_ERR_CUSTOM
     * @property {string} 2 - MEDIA_ERR_ABORTED
     * @property {string} 3 - MEDIA_ERR_NETWORK
     * @property {string} 4 - MEDIA_ERR_SRC_NOT_SUPPORTED
     * @property {string} 5 - MEDIA_ERR_ENCRYPTED
     */
    MediaError.errorTypes = ['MEDIA_ERR_CUSTOM', 'MEDIA_ERR_ABORTED', 'MEDIA_ERR_NETWORK', 'MEDIA_ERR_DECODE', 'MEDIA_ERR_SRC_NOT_SUPPORTED', 'MEDIA_ERR_ENCRYPTED'];

    /**
     * The default `MediaError` messages based on the {@link MediaError.errorTypes}.
     *
     * @type {Array}
     * @constant
     */
    MediaError.defaultMessages = {
        1: 'You aborted the media playback',
        2: 'A network error caused the media download to fail part-way.',
        3: 'The media playback was aborted due to a corruption problem or because the media used features your browser did not support.',
        4: 'The media could not be loaded, either because the server or network failed or because the format is not supported.',
        5: 'The media is encrypted and we do not have the keys to decrypt it.'
    };

// Add types as properties on MediaError
// e.g. MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED = 4;
    for (var errNum = 0; errNum < MediaError.errorTypes.length; errNum++) {
        MediaError[MediaError.errorTypes[errNum]] = errNum;
        // values should be accessible on both the class and instance
        MediaError.prototype[MediaError.errorTypes[errNum]] = errNum;
    }

    var tuple = SafeParseTuple;

    function SafeParseTuple(obj, reviver) {
        var json;
        var error = null;

        try {
            json = JSON.parse(obj, reviver);
        } catch (err) {
            error = err;
        }

        return [error, json]
    }

    /**
     * @file text-track-list-converter.js Utilities for capturing text track state and
     * re-creating tracks based on a capture.
     *
     * @module text-track-list-converter
     */

    /**
     * Examine a single {@link TextTrack} and return a JSON-compatible javascript object that
     * represents the {@link TextTrack}'s state.
     *
     * @param {TextTrack} track
     *        The text track to query.
     *
     * @return {Object}
     *         A serializable javascript representation of the TextTrack.
     * @private
     */
    var trackToJson_ = function trackToJson_(track) {
        var ret = ['kind', 'label', 'language', 'id', 'inBandMetadataTrackDispatchType', 'mode', 'src'].reduce(function (acc, prop, i) {

            if (track[prop]) {
                acc[prop] = track[prop];
            }

            return acc;
        }, {
            cues: track.cues && Array.prototype.map.call(track.cues, function (cue) {
                return {
                    startTime: cue.startTime,
                    endTime: cue.endTime,
                    text: cue.text,
                    id: cue.id
                };
            })
        });

        return ret;
    };

    /**
     * Examine a {@link Tech} and return a JSON-compatible javascript array that represents the
     * state of all {@link TextTrack}s currently configured. The return array is compatible with
     * {@link text-track-list-converter:jsonToTextTracks}.
     *
     * @param {Tech} tech
     *        The tech object to query
     *
     * @return {Array}
     *         A serializable javascript representation of the {@link Tech}s
     *         {@link TextTrackList}.
     */
    var textTracksToJson = function textTracksToJson(tech) {

        var trackEls = tech.$$('track');

        var trackObjs = Array.prototype.map.call(trackEls, function (t) {
            return t.track;
        });
        var tracks = Array.prototype.map.call(trackEls, function (trackEl) {
            var json = trackToJson_(trackEl.track);

            if (trackEl.src) {
                json.src = trackEl.src;
            }
            return json;
        });

        return tracks.concat(Array.prototype.filter.call(tech.textTracks(), function (track) {
            return trackObjs.indexOf(track) === -1;
        }).map(trackToJson_));
    };

    /**
     * Create a set of remote {@link TextTrack}s on a {@link Tech} based on an array of javascript
     * object {@link TextTrack} representations.
     *
     * @param {Array} json
     *        An array of `TextTrack` representation objects, like those that would be
     *        produced by `textTracksToJson`.
     *
     * @param {Tech} tech
     *        The `Tech` to create the `TextTrack`s on.
     */
    var jsonToTextTracks = function jsonToTextTracks(json, tech) {
        json.forEach(function (track) {
            var addedTrack = tech.addRemoteTextTrack(track).track;

            if (!track.src && track.cues) {
                track.cues.forEach(function (cue) {
                    return addedTrack.addCue(cue);
                });
            }
        });

        return tech.textTracks();
    };

    var textTrackConverter = { textTracksToJson: textTracksToJson, jsonToTextTracks: jsonToTextTracks, trackToJson_: trackToJson_ };

    /**
     * @file modal-dialog.js
     */
    var MODAL_CLASS_NAME = 'vjs-modal-dialog';
    var ESC = 27;

    /**
     * The `ModalDialog` displays over the video and its controls, which blocks
     * interaction with the player until it is closed.
     *
     * Modal dialogs include a "Close" button and will close when that button
     * is activated - or when ESC is pressed anywhere.
     *
     * @extends Component
     */

    var ModalDialog = function (_Component) {
        inherits(ModalDialog, _Component);

        /**
         * Create an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         *
         * @param {Mixed} [options.content=undefined]
         *        Provide customized content for this modal.
         *
         * @param {string} [options.description]
         *        A text description for the modal, primarily for accessibility.
         *
         * @param {boolean} [options.fillAlways=false]
         *        Normally, modals are automatically filled only the first time
         *        they open. This tells the modal to refresh its content
         *        every time it opens.
         *
         * @param {string} [options.label]
         *        A text label for the modal, primarily for accessibility.
         *
         * @param {boolean} [options.temporary=true]
         *        If `true`, the modal can only be opened once; it will be
         *        disposed as soon as it's closed.
         *
         * @param {boolean} [options.uncloseable=false]
         *        If `true`, the user will not be able to close the modal
         *        through the UI in the normal ways. Programmatic closing is
         *        still possible.
         */
        function ModalDialog(player, options) {
            classCallCheck(this, ModalDialog);

            var _this = possibleConstructorReturn(this, _Component.call(this, player, options));

            _this.opened_ = _this.hasBeenOpened_ = _this.hasBeenFilled_ = false;

            _this.closeable(!_this.options_.uncloseable);
            _this.content(_this.options_.content);

            // Make sure the contentEl is defined AFTER any children are initialized
            // because we only want the contents of the modal in the contentEl
            // (not the UI elements like the close button).
            _this.contentEl_ = createEl('div', {
                className: MODAL_CLASS_NAME + '-content'
            }, {
                role: 'document'
            });

            _this.descEl_ = createEl('p', {
                className: MODAL_CLASS_NAME + '-description vjs-control-text',
                id: _this.el().getAttribute('aria-describedby')
            });

            textContent(_this.descEl_, _this.description());
            _this.el_.appendChild(_this.descEl_);
            _this.el_.appendChild(_this.contentEl_);
            return _this;
        }

        /**
         * Create the `ModalDialog`'s DOM element
         *
         * @return {Element}
         *         The DOM element that gets created.
         */


        ModalDialog.prototype.createEl = function createEl$$1() {
            return _Component.prototype.createEl.call(this, 'div', {
                className: this.buildCSSClass(),
                tabIndex: -1
            }, {
                'aria-describedby': this.id() + '_description',
                'aria-hidden': 'true',
                'aria-label': this.label(),
                'role': 'dialog'
            });
        };

        /**
         * Builds the default DOM `className`.
         *
         * @return {string}
         *         The DOM `className` for this object.
         */


        ModalDialog.prototype.buildCSSClass = function buildCSSClass() {
            return MODAL_CLASS_NAME + ' vjs-hidden ' + _Component.prototype.buildCSSClass.call(this);
        };

        /**
         * Handles `keydown` events on the document, looking for ESC, which closes
         * the modal.
         *
         * @param {EventTarget~Event} e
         *        The keypress that triggered this event.
         *
         * @listens keydown
         */


        ModalDialog.prototype.handleKeyPress = function handleKeyPress(e) {
            if (e.which === ESC && this.closeable()) {
                this.close();
            }
        };

        /**
         * Returns the label string for this modal. Primarily used for accessibility.
         *
         * @return {string}
         *         the localized or raw label of this modal.
         */


        ModalDialog.prototype.label = function label() {
            return this.localize(this.options_.label || 'Modal Window');
        };

        /**
         * Returns the description string for this modal. Primarily used for
         * accessibility.
         *
         * @return {string}
         *         The localized or raw description of this modal.
         */


        ModalDialog.prototype.description = function description() {
            var desc = this.options_.description || this.localize('This is a modal window.');

            // Append a universal closeability message if the modal is closeable.
            if (this.closeable()) {
                desc += ' ' + this.localize('This modal can be closed by pressing the Escape key or activating the close button.');
            }

            return desc;
        };

        /**
         * Opens the modal.
         *
         * @fires ModalDialog#beforemodalopen
         * @fires ModalDialog#modalopen
         */


        ModalDialog.prototype.open = function open() {
            if (!this.opened_) {
                var player = this.player();

                /**
                 * Fired just before a `ModalDialog` is opened.
                 *
                 * @event ModalDialog#beforemodalopen
                 * @type {EventTarget~Event}
                 */
                this.trigger('beforemodalopen');
                this.opened_ = true;

                // Fill content if the modal has never opened before and
                // never been filled.
                if (this.options_.fillAlways || !this.hasBeenOpened_ && !this.hasBeenFilled_) {
                    this.fill();
                }

                // If the player was playing, pause it and take note of its previously
                // playing state.
                this.wasPlaying_ = !player.paused();

                if (this.options_.pauseOnOpen && this.wasPlaying_) {
                    player.pause();
                }

                if (this.closeable()) {
                    this.on(this.el_.ownerDocument, 'keydown', bind(this, this.handleKeyPress));
                }

                player.controls(false);
                this.show();
                this.conditionalFocus_();
                this.el().setAttribute('aria-hidden', 'false');

                /**
                 * Fired just after a `ModalDialog` is opened.
                 *
                 * @event ModalDialog#modalopen
                 * @type {EventTarget~Event}
                 */
                this.trigger('modalopen');
                this.hasBeenOpened_ = true;
            }
        };

        /**
         * If the `ModalDialog` is currently open or closed.
         *
         * @param  {boolean} [value]
         *         If given, it will open (`true`) or close (`false`) the modal.
         *
         * @return {boolean}
         *         the current open state of the modaldialog
         */


        ModalDialog.prototype.opened = function opened(value) {
            if (typeof value === 'boolean') {
                this[value ? 'open' : 'close']();
            }
            return this.opened_;
        };

        /**
         * Closes the modal, does nothing if the `ModalDialog` is
         * not open.
         *
         * @fires ModalDialog#beforemodalclose
         * @fires ModalDialog#modalclose
         */


        ModalDialog.prototype.close = function close() {
            if (!this.opened_) {
                return;
            }
            var player = this.player();

            /**
             * Fired just before a `ModalDialog` is closed.
             *
             * @event ModalDialog#beforemodalclose
             * @type {EventTarget~Event}
             */
            this.trigger('beforemodalclose');
            this.opened_ = false;

            if (this.wasPlaying_ && this.options_.pauseOnOpen) {
                player.play();
            }

            if (this.closeable()) {
                this.off(this.el_.ownerDocument, 'keydown', bind(this, this.handleKeyPress));
            }

            player.controls(true);
            this.hide();
            this.el().setAttribute('aria-hidden', 'true');

            /**
             * Fired just after a `ModalDialog` is closed.
             *
             * @event ModalDialog#modalclose
             * @type {EventTarget~Event}
             */
            this.trigger('modalclose');
            this.conditionalBlur_();

            if (this.options_.temporary) {
                this.dispose();
            }
        };

        /**
         * Check to see if the `ModalDialog` is closeable via the UI.
         *
         * @param  {boolean} [value]
         *         If given as a boolean, it will set the `closeable` option.
         *
         * @return {boolean}
         *         Returns the final value of the closable option.
         */


        ModalDialog.prototype.closeable = function closeable(value) {
            if (typeof value === 'boolean') {
                var closeable = this.closeable_ = !!value;
                var close = this.getChild('closeButton');

                // If this is being made closeable and has no close button, add one.
                if (closeable && !close) {

                    // The close button should be a child of the modal - not its
                    // content element, so temporarily change the content element.
                    var temp = this.contentEl_;

                    this.contentEl_ = this.el_;
                    close = this.addChild('closeButton', { controlText: 'Close Modal Dialog' });
                    this.contentEl_ = temp;
                    this.on(close, 'close', this.close);
                }

                // If this is being made uncloseable and has a close button, remove it.
                if (!closeable && close) {
                    this.off(close, 'close', this.close);
                    this.removeChild(close);
                    close.dispose();
                }
            }
            return this.closeable_;
        };

        /**
         * Fill the modal's content element with the modal's "content" option.
         * The content element will be emptied before this change takes place.
         */


        ModalDialog.prototype.fill = function fill() {
            this.fillWith(this.content());
        };

        /**
         * Fill the modal's content element with arbitrary content.
         * The content element will be emptied before this change takes place.
         *
         * @fires ModalDialog#beforemodalfill
         * @fires ModalDialog#modalfill
         *
         * @param {Mixed} [content]
         *        The same rules apply to this as apply to the `content` option.
         */


        ModalDialog.prototype.fillWith = function fillWith(content) {
            var contentEl = this.contentEl();
            var parentEl = contentEl.parentNode;
            var nextSiblingEl = contentEl.nextSibling;

            /**
             * Fired just before a `ModalDialog` is filled with content.
             *
             * @event ModalDialog#beforemodalfill
             * @type {EventTarget~Event}
             */
            this.trigger('beforemodalfill');
            this.hasBeenFilled_ = true;

            // Detach the content element from the DOM before performing
            // manipulation to avoid modifying the live DOM multiple times.
            parentEl.removeChild(contentEl);
            this.empty();
            insertContent(contentEl, content);
            /**
             * Fired just after a `ModalDialog` is filled with content.
             *
             * @event ModalDialog#modalfill
             * @type {EventTarget~Event}
             */
            this.trigger('modalfill');

            // Re-inject the re-filled content element.
            if (nextSiblingEl) {
                parentEl.insertBefore(contentEl, nextSiblingEl);
            } else {
                parentEl.appendChild(contentEl);
            }

            // make sure that the close button is last in the dialog DOM
            var closeButton = this.getChild('closeButton');

            if (closeButton) {
                parentEl.appendChild(closeButton.el_);
            }
        };

        /**
         * Empties the content element. This happens anytime the modal is filled.
         *
         * @fires ModalDialog#beforemodalempty
         * @fires ModalDialog#modalempty
         */


        ModalDialog.prototype.empty = function empty() {
            /**
             * Fired just before a `ModalDialog` is emptied.
             *
             * @event ModalDialog#beforemodalempty
             * @type {EventTarget~Event}
             */
            this.trigger('beforemodalempty');
            emptyEl(this.contentEl());

            /**
             * Fired just after a `ModalDialog` is emptied.
             *
             * @event ModalDialog#modalempty
             * @type {EventTarget~Event}
             */
            this.trigger('modalempty');
        };

        /**
         * Gets or sets the modal content, which gets normalized before being
         * rendered into the DOM.
         *
         * This does not update the DOM or fill the modal, but it is called during
         * that process.
         *
         * @param  {Mixed} [value]
         *         If defined, sets the internal content value to be used on the
         *         next call(s) to `fill`. This value is normalized before being
         *         inserted. To "clear" the internal content value, pass `null`.
         *
         * @return {Mixed}
         *         The current content of the modal dialog
         */


        ModalDialog.prototype.content = function content(value) {
            if (typeof value !== 'undefined') {
                this.content_ = value;
            }
            return this.content_;
        };

        /**
         * conditionally focus the modal dialog if focus was previously on the player.
         *
         * @private
         */


        ModalDialog.prototype.conditionalFocus_ = function conditionalFocus_() {
            var activeEl = document_1.activeElement;
            var playerEl = this.player_.el_;

            this.previouslyActiveEl_ = null;

            if (playerEl.contains(activeEl) || playerEl === activeEl) {
                this.previouslyActiveEl_ = activeEl;

                this.focus();

                this.on(document_1, 'keydown', this.handleKeyDown);
            }
        };

        /**
         * conditionally blur the element and refocus the last focused element
         *
         * @private
         */


        ModalDialog.prototype.conditionalBlur_ = function conditionalBlur_() {
            if (this.previouslyActiveEl_) {
                this.previouslyActiveEl_.focus();
                this.previouslyActiveEl_ = null;
            }

            this.off(document_1, 'keydown', this.handleKeyDown);
        };

        /**
         * Keydown handler. Attached when modal is focused.
         *
         * @listens keydown
         */


        ModalDialog.prototype.handleKeyDown = function handleKeyDown(event) {
            // exit early if it isn't a tab key
            if (event.which !== 9) {
                return;
            }

            var focusableEls = this.focusableEls_();
            var activeEl = this.el_.querySelector(':focus');
            var focusIndex = void 0;

            for (var i = 0; i < focusableEls.length; i++) {
                if (activeEl === focusableEls[i]) {
                    focusIndex = i;
                    break;
                }
            }

            if (document_1.activeElement === this.el_) {
                focusIndex = 0;
            }

            if (event.shiftKey && focusIndex === 0) {
                focusableEls[focusableEls.length - 1].focus();
                event.preventDefault();
            } else if (!event.shiftKey && focusIndex === focusableEls.length - 1) {
                focusableEls[0].focus();
                event.preventDefault();
            }
        };

        /**
         * get all focusable elements
         *
         * @private
         */


        ModalDialog.prototype.focusableEls_ = function focusableEls_() {
            var allChildren = this.el_.querySelectorAll('*');

            return Array.prototype.filter.call(allChildren, function (child) {
                return (child instanceof window_1.HTMLAnchorElement || child instanceof window_1.HTMLAreaElement) && child.hasAttribute('href') || (child instanceof window_1.HTMLInputElement || child instanceof window_1.HTMLSelectElement || child instanceof window_1.HTMLTextAreaElement || child instanceof window_1.HTMLButtonElement) && !child.hasAttribute('disabled') || child instanceof window_1.HTMLIFrameElement || child instanceof window_1.HTMLObjectElement || child instanceof window_1.HTMLEmbedElement || child.hasAttribute('tabindex') && child.getAttribute('tabindex') !== -1 || child.hasAttribute('contenteditable');
            });
        };

        return ModalDialog;
    }(Component);

    /**
     * Default options for `ModalDialog` default options.
     *
     * @type {Object}
     * @private
     */


    ModalDialog.prototype.options_ = {
        pauseOnOpen: true,
        temporary: true
    };

    Component.registerComponent('ModalDialog', ModalDialog);

    /**
     * @file track-list.js
     */
    /**
     * Common functionaliy between {@link TextTrackList}, {@link AudioTrackList}, and
     * {@link VideoTrackList}
     *
     * @extends EventTarget
     */

    var TrackList = function (_EventTarget) {
        inherits(TrackList, _EventTarget);

        /**
         * Create an instance of this class
         *
         * @param {Track[]} tracks
         *        A list of tracks to initialize the list with.
         *
         * @param {Object} [list]
         *        The child object with inheritance done manually for ie8.
         *
         * @abstract
         */
        function TrackList() {
            var tracks = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];

            var _ret;

            var list = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;
            classCallCheck(this, TrackList);

            var _this = possibleConstructorReturn(this, _EventTarget.call(this));

            if (!list) {
                list = _this; // eslint-disable-line
                if (IS_IE8) {
                    list = document_1.createElement('custom');
                    for (var prop in TrackList.prototype) {
                        if (prop !== 'constructor') {
                            list[prop] = TrackList.prototype[prop];
                        }
                    }
                }
            }

            list.tracks_ = [];

            /**
             * @memberof TrackList
             * @member {number} length
             *         The current number of `Track`s in the this Trackist.
             * @instance
             */
            Object.defineProperty(list, 'length', {
                get: function get$$1() {
                    return this.tracks_.length;
                }
            });

            for (var i = 0; i < tracks.length; i++) {
                list.addTrack(tracks[i]);
            }

            // must return the object, as for ie8 it will not be this
            // but a reference to a document object
            return _ret = list, possibleConstructorReturn(_this, _ret);
        }

        /**
         * Add a {@link Track} to the `TrackList`
         *
         * @param {Track} track
         *        The audio, video, or text track to add to the list.
         *
         * @fires TrackList#addtrack
         */


        TrackList.prototype.addTrack = function addTrack(track) {
            var index = this.tracks_.length;

            if (!('' + index in this)) {
                Object.defineProperty(this, index, {
                    get: function get$$1() {
                        return this.tracks_[index];
                    }
                });
            }

            // Do not add duplicate tracks
            if (this.tracks_.indexOf(track) === -1) {
                this.tracks_.push(track);
                /**
                 * Triggered when a track is added to a track list.
                 *
                 * @event TrackList#addtrack
                 * @type {EventTarget~Event}
                 * @property {Track} track
                 *           A reference to track that was added.
                 */
                this.trigger({
                    track: track,
                    type: 'addtrack'
                });
            }
        };

        /**
         * Remove a {@link Track} from the `TrackList`
         *
         * @param {Track} rtrack
         *        The audio, video, or text track to remove from the list.
         *
         * @fires TrackList#removetrack
         */


        TrackList.prototype.removeTrack = function removeTrack(rtrack) {
            var track = void 0;

            for (var i = 0, l = this.length; i < l; i++) {
                if (this[i] === rtrack) {
                    track = this[i];
                    if (track.off) {
                        track.off();
                    }

                    this.tracks_.splice(i, 1);

                    break;
                }
            }

            if (!track) {
                return;
            }

            /**
             * Triggered when a track is removed from track list.
             *
             * @event TrackList#removetrack
             * @type {EventTarget~Event}
             * @property {Track} track
             *           A reference to track that was removed.
             */
            this.trigger({
                track: track,
                type: 'removetrack'
            });
        };

        /**
         * Get a Track from the TrackList by a tracks id
         *
         * @param {String} id - the id of the track to get
         * @method getTrackById
         * @return {Track}
         * @private
         */


        TrackList.prototype.getTrackById = function getTrackById(id) {
            var result = null;

            for (var i = 0, l = this.length; i < l; i++) {
                var track = this[i];

                if (track.id === id) {
                    result = track;
                    break;
                }
            }

            return result;
        };

        return TrackList;
    }(EventTarget);

    /**
     * Triggered when a different track is selected/enabled.
     *
     * @event TrackList#change
     * @type {EventTarget~Event}
     */

    /**
     * Events that can be called with on + eventName. See {@link EventHandler}.
     *
     * @property {Object} TrackList#allowedEvents_
     * @private
     */


    TrackList.prototype.allowedEvents_ = {
        change: 'change',
        addtrack: 'addtrack',
        removetrack: 'removetrack'
    };

// emulate attribute EventHandler support to allow for feature detection
    for (var event in TrackList.prototype.allowedEvents_) {
        TrackList.prototype['on' + event] = null;
    }

    /**
     * @file audio-track-list.js
     */
    /**
     * Anywhere we call this function we diverge from the spec
     * as we only support one enabled audiotrack at a time
     *
     * @param {AudioTrackList} list
     *        list to work on
     *
     * @param {AudioTrack} track
     *        The track to skip
     *
     * @private
     */
    var disableOthers = function disableOthers(list, track) {
        for (var i = 0; i < list.length; i++) {
            if (!Object.keys(list[i]).length || track.id === list[i].id) {
                continue;
            }
            // another audio track is enabled, disable it
            list[i].enabled = false;
        }
    };

    /**
     * The current list of {@link AudioTrack} for a media file.
     *
     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotracklist}
     * @extends TrackList
     */

    var AudioTrackList = function (_TrackList) {
        inherits(AudioTrackList, _TrackList);

        /**
         * Create an instance of this class.
         *
         * @param {AudioTrack[]} [tracks=[]]
         *        A list of `AudioTrack` to instantiate the list with.
         */
        function AudioTrackList() {
            var _this, _ret;

            var tracks = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
            classCallCheck(this, AudioTrackList);

            var list = void 0;

            // make sure only 1 track is enabled
            // sorted from last index to first index
            for (var i = tracks.length - 1; i >= 0; i--) {
                if (tracks[i].enabled) {
                    disableOthers(tracks, tracks[i]);
                    break;
                }
            }

            // IE8 forces us to implement inheritance ourselves
            // as it does not support Object.defineProperty properly
            if (IS_IE8) {
                list = document_1.createElement('custom');
                for (var prop in TrackList.prototype) {
                    if (prop !== 'constructor') {
                        list[prop] = TrackList.prototype[prop];
                    }
                }
                for (var _prop in AudioTrackList.prototype) {
                    if (_prop !== 'constructor') {
                        list[_prop] = AudioTrackList.prototype[_prop];
                    }
                }
            }

            list = (_this = possibleConstructorReturn(this, _TrackList.call(this, tracks, list)), _this);
            list.changing_ = false;

            return _ret = list, possibleConstructorReturn(_this, _ret);
        }

        /**
         * Add an {@link AudioTrack} to the `AudioTrackList`.
         *
         * @param {AudioTrack} track
         *        The AudioTrack to add to the list
         *
         * @fires TrackList#addtrack
         */


        AudioTrackList.prototype.addTrack = function addTrack(track) {
            var _this2 = this;

            if (track.enabled) {
                disableOthers(this, track);
            }

            _TrackList.prototype.addTrack.call(this, track);
            // native tracks don't have this
            if (!track.addEventListener) {
                return;
            }

            /**
             * @listens AudioTrack#enabledchange
             * @fires TrackList#change
             */
            track.addEventListener('enabledchange', function () {
                // when we are disabling other tracks (since we don't support
                // more than one track at a time) we will set changing_
                // to true so that we don't trigger additional change events
                if (_this2.changing_) {
                    return;
                }
                _this2.changing_ = true;
                disableOthers(_this2, track);
                _this2.changing_ = false;
                _this2.trigger('change');
            });
        };

        return AudioTrackList;
    }(TrackList);

    /**
     * @file video-track-list.js
     */
    /**
     * Un-select all other {@link VideoTrack}s that are selected.
     *
     * @param {VideoTrackList} list
     *        list to work on
     *
     * @param {VideoTrack} track
     *        The track to skip
     *
     * @private
     */
    var disableOthers$1 = function disableOthers(list, track) {
        for (var i = 0; i < list.length; i++) {
            if (!Object.keys(list[i]).length || track.id === list[i].id) {
                continue;
            }
            // another video track is enabled, disable it
            list[i].selected = false;
        }
    };

    /**
     * The current list of {@link VideoTrack} for a video.
     *
     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#videotracklist}
     * @extends TrackList
     */

    var VideoTrackList = function (_TrackList) {
        inherits(VideoTrackList, _TrackList);

        /**
         * Create an instance of this class.
         *
         * @param {VideoTrack[]} [tracks=[]]
         *        A list of `VideoTrack` to instantiate the list with.
         */
        function VideoTrackList() {
            var _this, _ret;

            var tracks = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
            classCallCheck(this, VideoTrackList);

            var list = void 0;

            // make sure only 1 track is enabled
            // sorted from last index to first index
            for (var i = tracks.length - 1; i >= 0; i--) {
                if (tracks[i].selected) {
                    disableOthers$1(tracks, tracks[i]);
                    break;
                }
            }

            // IE8 forces us to implement inheritance ourselves
            // as it does not support Object.defineProperty properly
            if (IS_IE8) {
                list = document_1.createElement('custom');
                for (var prop in TrackList.prototype) {
                    if (prop !== 'constructor') {
                        list[prop] = TrackList.prototype[prop];
                    }
                }
                for (var _prop in VideoTrackList.prototype) {
                    if (_prop !== 'constructor') {
                        list[_prop] = VideoTrackList.prototype[_prop];
                    }
                }
            }

            list = (_this = possibleConstructorReturn(this, _TrackList.call(this, tracks, list)), _this);
            list.changing_ = false;

            /**
             * @member {number} VideoTrackList#selectedIndex
             *         The current index of the selected {@link VideoTrack`}.
             */
            Object.defineProperty(list, 'selectedIndex', {
                get: function get$$1() {
                    for (var _i = 0; _i < this.length; _i++) {
                        if (this[_i].selected) {
                            return _i;
                        }
                    }
                    return -1;
                },
                set: function set$$1() {}
            });

            return _ret = list, possibleConstructorReturn(_this, _ret);
        }

        /**
         * Add a {@link VideoTrack} to the `VideoTrackList`.
         *
         * @param {VideoTrack} track
         *        The VideoTrack to add to the list
         *
         * @fires TrackList#addtrack
         */


        VideoTrackList.prototype.addTrack = function addTrack(track) {
            var _this2 = this;

            if (track.selected) {
                disableOthers$1(this, track);
            }

            _TrackList.prototype.addTrack.call(this, track);
            // native tracks don't have this
            if (!track.addEventListener) {
                return;
            }

            /**
             * @listens VideoTrack#selectedchange
             * @fires TrackList#change
             */
            track.addEventListener('selectedchange', function () {
                if (_this2.changing_) {
                    return;
                }
                _this2.changing_ = true;
                disableOthers$1(_this2, track);
                _this2.changing_ = false;
                _this2.trigger('change');
            });
        };

        return VideoTrackList;
    }(TrackList);

    /**
     * @file text-track-list.js
     */
    /**
     * The current list of {@link TextTrack} for a media file.
     *
     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttracklist}
     * @extends TrackList
     */

    var TextTrackList = function (_TrackList) {
        inherits(TextTrackList, _TrackList);

        /**
         * Create an instance of this class.
         *
         * @param {TextTrack[]} [tracks=[]]
         *        A list of `TextTrack` to instantiate the list with.
         */
        function TextTrackList() {
            var _this, _ret;

            var tracks = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
            classCallCheck(this, TextTrackList);

            var list = void 0;

            // IE8 forces us to implement inheritance ourselves
            // as it does not support Object.defineProperty properly
            if (IS_IE8) {
                list = document_1.createElement('custom');
                for (var prop in TrackList.prototype) {
                    if (prop !== 'constructor') {
                        list[prop] = TrackList.prototype[prop];
                    }
                }
                for (var _prop in TextTrackList.prototype) {
                    if (_prop !== 'constructor') {
                        list[_prop] = TextTrackList.prototype[_prop];
                    }
                }
            }

            list = (_this = possibleConstructorReturn(this, _TrackList.call(this, tracks, list)), _this);
            return _ret = list, possibleConstructorReturn(_this, _ret);
        }

        /**
         * Add a {@link TextTrack} to the `TextTrackList`
         *
         * @param {TextTrack} track
         *        The text track to add to the list.
         *
         * @fires TrackList#addtrack
         */


        TextTrackList.prototype.addTrack = function addTrack(track) {
            _TrackList.prototype.addTrack.call(this, track);

            /**
             * @listens TextTrack#modechange
             * @fires TrackList#change
             */
            track.addEventListener('modechange', bind(this, function () {
                this.trigger('change');
            }));

            var nonLanguageTextTrackKind = ['metadata', 'chapters'];

            if (nonLanguageTextTrackKind.indexOf(track.kind) === -1) {
                track.addEventListener('modechange', bind(this, function () {
                    this.trigger('selectedlanguagechange');
                }));
            }
        };

        return TextTrackList;
    }(TrackList);

    /**
     * @file html-track-element-list.js
     */

    /**
     * The current list of {@link HtmlTrackElement}s.
     */

    var HtmlTrackElementList = function () {

        /**
         * Create an instance of this class.
         *
         * @param {HtmlTrackElement[]} [tracks=[]]
         *        A list of `HtmlTrackElement` to instantiate the list with.
         */
        function HtmlTrackElementList() {
            var trackElements = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
            classCallCheck(this, HtmlTrackElementList);

            var list = this; // eslint-disable-line

            if (IS_IE8) {
                list = document_1.createElement('custom');

                for (var prop in HtmlTrackElementList.prototype) {
                    if (prop !== 'constructor') {
                        list[prop] = HtmlTrackElementList.prototype[prop];
                    }
                }
            }

            list.trackElements_ = [];

            /**
             * @memberof HtmlTrackElementList
             * @member {number} length
             *         The current number of `Track`s in the this Trackist.
             * @instance
             */
            Object.defineProperty(list, 'length', {
                get: function get$$1() {
                    return this.trackElements_.length;
                }
            });

            for (var i = 0, length = trackElements.length; i < length; i++) {
                list.addTrackElement_(trackElements[i]);
            }

            if (IS_IE8) {
                return list;
            }
        }

        /**
         * Add an {@link HtmlTrackElement} to the `HtmlTrackElementList`
         *
         * @param {HtmlTrackElement} trackElement
         *        The track element to add to the list.
         *
         * @private
         */


        HtmlTrackElementList.prototype.addTrackElement_ = function addTrackElement_(trackElement) {
            var index = this.trackElements_.length;

            if (!('' + index in this)) {
                Object.defineProperty(this, index, {
                    get: function get$$1() {
                        return this.trackElements_[index];
                    }
                });
            }

            // Do not add duplicate elements
            if (this.trackElements_.indexOf(trackElement) === -1) {
                this.trackElements_.push(trackElement);
            }
        };

        /**
         * Get an {@link HtmlTrackElement} from the `HtmlTrackElementList` given an
         * {@link TextTrack}.
         *
         * @param {TextTrack} track
         *        The track associated with a track element.
         *
         * @return {HtmlTrackElement|undefined}
         *         The track element that was found or undefined.
         *
         * @private
         */


        HtmlTrackElementList.prototype.getTrackElementByTrack_ = function getTrackElementByTrack_(track) {
            var trackElement_ = void 0;

            for (var i = 0, length = this.trackElements_.length; i < length; i++) {
                if (track === this.trackElements_[i].track) {
                    trackElement_ = this.trackElements_[i];

                    break;
                }
            }

            return trackElement_;
        };

        /**
         * Remove a {@link HtmlTrackElement} from the `HtmlTrackElementList`
         *
         * @param {HtmlTrackElement} trackElement
         *        The track element to remove from the list.
         *
         * @private
         */


        HtmlTrackElementList.prototype.removeTrackElement_ = function removeTrackElement_(trackElement) {
            for (var i = 0, length = this.trackElements_.length; i < length; i++) {
                if (trackElement === this.trackElements_[i]) {
                    this.trackElements_.splice(i, 1);

                    break;
                }
            }
        };

        return HtmlTrackElementList;
    }();

    /**
     * @file text-track-cue-list.js
     */
    /**
     * @typedef {Object} TextTrackCueList~TextTrackCue
     *
     * @property {string} id
     *           The unique id for this text track cue
     *
     * @property {number} startTime
     *           The start time for this text track cue
     *
     * @property {number} endTime
     *           The end time for this text track cue
     *
     * @property {boolean} pauseOnExit
     *           Pause when the end time is reached if true.
     *
     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackcue}
     */

    /**
     * A List of TextTrackCues.
     *
     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackcuelist}
     */

    var TextTrackCueList = function () {

        /**
         * Create an instance of this class..
         *
         * @param {Array} cues
         *        A list of cues to be initialized with
         */
        function TextTrackCueList(cues) {
            classCallCheck(this, TextTrackCueList);

            var list = this; // eslint-disable-line

            if (IS_IE8) {
                list = document_1.createElement('custom');

                for (var prop in TextTrackCueList.prototype) {
                    if (prop !== 'constructor') {
                        list[prop] = TextTrackCueList.prototype[prop];
                    }
                }
            }

            TextTrackCueList.prototype.setCues_.call(list, cues);

            /**
             * @memberof TextTrackCueList
             * @member {number} length
             *         The current number of `TextTrackCue`s in the TextTrackCueList.
             * @instance
             */
            Object.defineProperty(list, 'length', {
                get: function get$$1() {
                    return this.length_;
                }
            });

            if (IS_IE8) {
                return list;
            }
        }

        /**
         * A setter for cues in this list. Creates getters
         * an an index for the cues.
         *
         * @param {Array} cues
         *        An array of cues to set
         *
         * @private
         */


        TextTrackCueList.prototype.setCues_ = function setCues_(cues) {
            var oldLength = this.length || 0;
            var i = 0;
            var l = cues.length;

            this.cues_ = cues;
            this.length_ = cues.length;

            var defineProp = function defineProp(index) {
                if (!('' + index in this)) {
                    Object.defineProperty(this, '' + index, {
                        get: function get$$1() {
                            return this.cues_[index];
                        }
                    });
                }
            };

            if (oldLength < l) {
                i = oldLength;

                for (; i < l; i++) {
                    defineProp.call(this, i);
                }
            }
        };

        /**
         * Get a `TextTrackCue` that is currently in the `TextTrackCueList` by id.
         *
         * @param {string} id
         *        The id of the cue that should be searched for.
         *
         * @return {TextTrackCueList~TextTrackCue|null}
         *         A single cue or null if none was found.
         */


        TextTrackCueList.prototype.getCueById = function getCueById(id) {
            var result = null;

            for (var i = 0, l = this.length; i < l; i++) {
                var cue = this[i];

                if (cue.id === id) {
                    result = cue;
                    break;
                }
            }

            return result;
        };

        return TextTrackCueList;
    }();

    /**
     * @file track-kinds.js
     */

    /**
     * All possible `VideoTrackKind`s
     *
     * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-videotrack-kind
     * @typedef VideoTrack~Kind
     * @enum
     */
    var VideoTrackKind = {
        alternative: 'alternative',
        captions: 'captions',
        main: 'main',
        sign: 'sign',
        subtitles: 'subtitles',
        commentary: 'commentary'
    };

    /**
     * All possible `AudioTrackKind`s
     *
     * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-audiotrack-kind
     * @typedef AudioTrack~Kind
     * @enum
     */
    var AudioTrackKind = {
        'alternative': 'alternative',
        'descriptions': 'descriptions',
        'main': 'main',
        'main-desc': 'main-desc',
        'translation': 'translation',
        'commentary': 'commentary'
    };

    /**
     * All possible `TextTrackKind`s
     *
     * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-texttrack-kind
     * @typedef TextTrack~Kind
     * @enum
     */
    var TextTrackKind = {
        subtitles: 'subtitles',
        captions: 'captions',
        descriptions: 'descriptions',
        chapters: 'chapters',
        metadata: 'metadata'
    };

    /**
     * All possible `TextTrackMode`s
     *
     * @see https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackmode
     * @typedef TextTrack~Mode
     * @enum
     */
    var TextTrackMode = {
        disabled: 'disabled',
        hidden: 'hidden',
        showing: 'showing'
    };

    /**
     * @file track.js
     */
    /**
     * A Track class that contains all of the common functionality for {@link AudioTrack},
     * {@link VideoTrack}, and {@link TextTrack}.
     *
     * > Note: This class should not be used directly
     *
     * @see {@link https://html.spec.whatwg.org/multipage/embedded-content.html}
     * @extends EventTarget
     * @abstract
     */

    var Track = function (_EventTarget) {
        inherits(Track, _EventTarget);

        /**
         * Create an instance of this class.
         *
         * @param {Object} [options={}]
         *        Object of option names and values
         *
         * @param {string} [options.kind='']
         *        A valid kind for the track type you are creating.
         *
         * @param {string} [options.id='vjs_track_' + Guid.newGUID()]
         *        A unique id for this AudioTrack.
         *
         * @param {string} [options.label='']
         *        The menu label for this track.
         *
         * @param {string} [options.language='']
         *        A valid two character language code.
         *
         * @abstract
         */
        function Track() {
            var _ret;

            var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
            classCallCheck(this, Track);

            var _this = possibleConstructorReturn(this, _EventTarget.call(this));

            var track = _this; // eslint-disable-line

            if (IS_IE8) {
                track = document_1.createElement('custom');
                for (var prop in Track.prototype) {
                    if (prop !== 'constructor') {
                        track[prop] = Track.prototype[prop];
                    }
                }
            }

            var trackProps = {
                id: options.id || 'vjs_track_' + newGUID(),
                kind: options.kind || '',
                label: options.label || '',
                language: options.language || ''
            };

            /**
             * @memberof Track
             * @member {string} id
             *         The id of this track. Cannot be changed after creation.
             * @instance
             *
             * @readonly
             */

            /**
             * @memberof Track
             * @member {string} kind
             *         The kind of track that this is. Cannot be changed after creation.
             * @instance
             *
             * @readonly
             */

            /**
             * @memberof Track
             * @member {string} label
             *         The label of this track. Cannot be changed after creation.
             * @instance
             *
             * @readonly
             */

            /**
             * @memberof Track
             * @member {string} language
             *         The two letter language code for this track. Cannot be changed after
             *         creation.
             * @instance
             *
             * @readonly
             */

            var _loop = function _loop(key) {
                Object.defineProperty(track, key, {
                    get: function get$$1() {
                        return trackProps[key];
                    },
                    set: function set$$1() {}
                });
            };

            for (var key in trackProps) {
                _loop(key);
            }

            return _ret = track, possibleConstructorReturn(_this, _ret);
        }

        return Track;
    }(EventTarget);

    /**
     * @file url.js
     * @module url
     */
    /**
     * @typedef {Object} url:URLObject
     *
     * @property {string} protocol
     *           The protocol of the url that was parsed.
     *
     * @property {string} hostname
     *           The hostname of the url that was parsed.
     *
     * @property {string} port
     *           The port of the url that was parsed.
     *
     * @property {string} pathname
     *           The pathname of the url that was parsed.
     *
     * @property {string} search
     *           The search query of the url that was parsed.
     *
     * @property {string} hash
     *           The hash of the url that was parsed.
     *
     * @property {string} host
     *           The host of the url that was parsed.
     */

    /**
     * Resolve and parse the elements of a URL.
     *
     * @param  {String} url
     *         The url to parse
     *
     * @return {url:URLObject}
     *         An object of url details
     */
    var parseUrl = function parseUrl(url) {
        var props = ['protocol', 'hostname', 'port', 'pathname', 'search', 'hash', 'host'];

        // add the url to an anchor and let the browser parse the URL
        var a = document_1.createElement('a');

        a.href = url;

        // IE8 (and 9?) Fix
        // ie8 doesn't parse the URL correctly until the anchor is actually
        // added to the body, and an innerHTML is needed to trigger the parsing
        var addToBody = a.host === '' && a.protocol !== 'file:';
        var div = void 0;

        if (addToBody) {
            div = document_1.createElement('div');
            div.innerHTML = '<a href="' + url + '"></a>';
            a = div.firstChild;
            // prevent the div from affecting layout
            div.setAttribute('style', 'display:none; position:absolute;');
            document_1.body.appendChild(div);
        }

        // Copy the specific URL properties to a new object
        // This is also needed for IE8 because the anchor loses its
        // properties when it's removed from the dom
        var details = {};

        for (var i = 0; i < props.length; i++) {
            details[props[i]] = a[props[i]];
        }

        // IE9 adds the port to the host property unlike everyone else. If
        // a port identifier is added for standard ports, strip it.
        if (details.protocol === 'http:') {
            details.host = details.host.replace(/:80$/, '');
        }

        if (details.protocol === 'https:') {
            details.host = details.host.replace(/:443$/, '');
        }

        if (addToBody) {
            document_1.body.removeChild(div);
        }

        return details;
    };

    /**
     * Get absolute version of relative URL. Used to tell flash correct URL.
     *
     *
     * @param  {string} url
     *         URL to make absolute
     *
     * @return {string}
     *         Absolute URL
     *
     * @see http://stackoverflow.com/questions/470832/getting-an-absolute-url-from-a-relative-one-ie6-issue
     */
    var getAbsoluteURL = function getAbsoluteURL(url) {
        // Check if absolute URL
        if (!url.match(/^https?:\/\//)) {
            // Convert to absolute URL. Flash hosted off-site needs an absolute URL.
            var div = document_1.createElement('div');

            div.innerHTML = '<a href="' + url + '">x</a>';
            url = div.firstChild.href;
        }

        return url;
    };

    /**
     * Returns the extension of the passed file name. It will return an empty string
     * if passed an invalid path.
     *
     * @param {string} path
     *        The fileName path like '/path/to/file.mp4'
     *
     * @returns {string}
     *          The extension in lower case or an empty string if no
     *          extension could be found.
     */
    var getFileExtension = function getFileExtension(path) {
        if (typeof path === 'string') {
            var splitPathRe = /^(\/?)([\s\S]*?)((?:\.{1,2}|[^\/]+?)(\.([^\.\/\?]+)))(?:[\/]*|[\?].*)$/i;
            var pathParts = splitPathRe.exec(path);

            if (pathParts) {
                return pathParts.pop().toLowerCase();
            }
        }

        return '';
    };

    /**
     * Returns whether the url passed is a cross domain request or not.
     *
     * @param {string} url
     *        The url to check.
     *
     * @return {boolean}
     *         Whether it is a cross domain request or not.
     */
    var isCrossOrigin = function isCrossOrigin(url) {
        var winLoc = window_1.location;
        var urlInfo = parseUrl(url);

        // IE8 protocol relative urls will return ':' for protocol
        var srcProtocol = urlInfo.protocol === ':' ? winLoc.protocol : urlInfo.protocol;

        // Check if url is for another domain/origin
        // IE8 doesn't know location.origin, so we won't rely on it here
        var crossOrigin = srcProtocol + urlInfo.host !== winLoc.protocol + winLoc.host;

        return crossOrigin;
    };

    var Url = (Object.freeze || Object)({
        parseUrl: parseUrl,
        getAbsoluteURL: getAbsoluteURL,
        getFileExtension: getFileExtension,
        isCrossOrigin: isCrossOrigin
    });

    var isFunction_1 = isFunction;

    var toString$1 = Object.prototype.toString;

    function isFunction (fn) {
        var string = toString$1.call(fn);
        return string === '[object Function]' ||
            (typeof fn === 'function' && string !== '[object RegExp]') ||
            (typeof window !== 'undefined' &&
            // IE8 and below
            (fn === window.setTimeout ||
            fn === window.alert ||
            fn === window.confirm ||
            fn === window.prompt))
    }

    var trim_1 = createCommonjsModule(function (module, exports) {
        exports = module.exports = trim;

        function trim(str){
            return str.replace(/^\s*|\s*$/g, '');
        }

        exports.left = function(str){
            return str.replace(/^\s*/, '');
        };

        exports.right = function(str){
            return str.replace(/\s*$/, '');
        };
    });

    var forEach_1 = forEach;

    var toString$2 = Object.prototype.toString;
    var hasOwnProperty = Object.prototype.hasOwnProperty;

    function forEach(list, iterator, context) {
        if (!isFunction_1(iterator)) {
            throw new TypeError('iterator must be a function')
        }

        if (arguments.length < 3) {
            context = this;
        }

        if (toString$2.call(list) === '[object Array]')
            forEachArray$1(list, iterator, context);
        else if (typeof list === 'string')
            forEachString(list, iterator, context);
        else
            forEachObject(list, iterator, context);
    }

    function forEachArray$1(array, iterator, context) {
        for (var i = 0, len = array.length; i < len; i++) {
            if (hasOwnProperty.call(array, i)) {
                iterator.call(context, array[i], i, array);
            }
        }
    }

    function forEachString(string, iterator, context) {
        for (var i = 0, len = string.length; i < len; i++) {
            // no such thing as a sparse string.
            iterator.call(context, string.charAt(i), i, string);
        }
    }

    function forEachObject(object, iterator, context) {
        for (var k in object) {
            if (hasOwnProperty.call(object, k)) {
                iterator.call(context, object[k], k, object);
            }
        }
    }

    var isArray = function(arg) {
        return Object.prototype.toString.call(arg) === '[object Array]';
    };

    var parseHeaders = function (headers) {
        if (!headers)
            return {}

        var result = {};

        forEach_1(
            trim_1(headers).split('\n')
            , function (row) {
                var index = row.indexOf(':')
                    , key = trim_1(row.slice(0, index)).toLowerCase()
                    , value = trim_1(row.slice(index + 1));

                if (typeof(result[key]) === 'undefined') {
                    result[key] = value;
                } else if (isArray(result[key])) {
                    result[key].push(value);
                } else {
                    result[key] = [ result[key], value ];
                }
            }
        );

        return result
    };

    var immutable = extend;

    var hasOwnProperty$1 = Object.prototype.hasOwnProperty;

    function extend() {
        var target = {};

        for (var i = 0; i < arguments.length; i++) {
            var source = arguments[i];

            for (var key in source) {
                if (hasOwnProperty$1.call(source, key)) {
                    target[key] = source[key];
                }
            }
        }

        return target
    }

    var xhr = createXHR;
    createXHR.XMLHttpRequest = window_1.XMLHttpRequest || noop;
    createXHR.XDomainRequest = "withCredentials" in (new createXHR.XMLHttpRequest()) ? createXHR.XMLHttpRequest : window_1.XDomainRequest;

    forEachArray(["get", "put", "post", "patch", "head", "delete"], function(method) {
        createXHR[method === "delete" ? "del" : method] = function(uri, options, callback) {
            options = initParams(uri, options, callback);
            options.method = method.toUpperCase();
            return _createXHR(options)
        };
    });

    function forEachArray(array, iterator) {
        for (var i = 0; i < array.length; i++) {
            iterator(array[i]);
        }
    }

    function isEmpty(obj){
        for(var i in obj){
            if(obj.hasOwnProperty(i)) return false
        }
        return true
    }

    function initParams(uri, options, callback) {
        var params = uri;

        if (isFunction_1(options)) {
            callback = options;
            if (typeof uri === "string") {
                params = {uri:uri};
            }
        } else {
            params = immutable(options, {uri: uri});
        }

        params.callback = callback;
        return params
    }

    function createXHR(uri, options, callback) {
        options = initParams(uri, options, callback);
        return _createXHR(options)
    }

    function _createXHR(options) {
        if(typeof options.callback === "undefined"){
            throw new Error("callback argument missing")
        }

        var called = false;
        var callback = function cbOnce(err, response, body){
            if(!called){
                called = true;
                options.callback(err, response, body);
            }
        };

        function readystatechange() {
            if (xhr.readyState === 4) {
                setTimeout(loadFunc, 0);
            }
        }

        function getBody() {
            // Chrome with requestType=blob throws errors arround when even testing access to responseText
            var body = undefined;

            if (xhr.response) {
                body = xhr.response;
            } else {
                body = xhr.responseText || getXml(xhr);
            }

            if (isJson) {
                try {
                    body = JSON.parse(body);
                } catch (e) {}
            }

            return body
        }

        function errorFunc(evt) {
            clearTimeout(timeoutTimer);
            if(!(evt instanceof Error)){
                evt = new Error("" + (evt || "Unknown XMLHttpRequest Error") );
            }
            evt.statusCode = 0;
            return callback(evt, failureResponse)
        }

        // will load the data & process the response in a special response object
        function loadFunc() {
            if (aborted) return
            var status;
            clearTimeout(timeoutTimer);
            if(options.useXDR && xhr.status===undefined) {
                //IE8 CORS GET successful response doesn't have a status field, but body is fine
                status = 200;
            } else {
                status = (xhr.status === 1223 ? 204 : xhr.status);
            }
            var response = failureResponse;
            var err = null;

            if (status !== 0){
                response = {
                    body: getBody(),
                    statusCode: status,
                    method: method,
                    headers: {},
                    url: uri,
                    rawRequest: xhr
                };
                if(xhr.getAllResponseHeaders){ //remember xhr can in fact be XDR for CORS in IE
                    response.headers = parseHeaders(xhr.getAllResponseHeaders());
                }
            } else {
                err = new Error("Internal XMLHttpRequest Error");
            }
            return callback(err, response, response.body)
        }

        var xhr = options.xhr || null;

        if (!xhr) {
            if (options.cors || options.useXDR) {
                xhr = new createXHR.XDomainRequest();
            }else{
                xhr = new createXHR.XMLHttpRequest();
            }
        }

        var key;
        var aborted;
        var uri = xhr.url = options.uri || options.url;
        var method = xhr.method = options.method || "GET";
        var body = options.body || options.data;
        var headers = xhr.headers = options.headers || {};
        var sync = !!options.sync;
        var isJson = false;
        var timeoutTimer;
        var failureResponse = {
            body: undefined,
            headers: {},
            statusCode: 0,
            method: method,
            url: uri,
            rawRequest: xhr
        };

        if ("json" in options && options.json !== false) {
            isJson = true;
            headers["accept"] || headers["Accept"] || (headers["Accept"] = "application/json"); //Don't override existing accept header declared by user
            if (method !== "GET" && method !== "HEAD") {
                headers["content-type"] || headers["Content-Type"] || (headers["Content-Type"] = "application/json"); //Don't override existing accept header declared by user
                body = JSON.stringify(options.json === true ? body : options.json);
            }
        }

        xhr.onreadystatechange = readystatechange;
        xhr.onload = loadFunc;
        xhr.onerror = errorFunc;
        // IE9 must have onprogress be set to a unique function.
        xhr.onprogress = function () {
            // IE must die
        };
        xhr.onabort = function(){
            aborted = true;
        };
        xhr.ontimeout = errorFunc;
        xhr.open(method, uri, !sync, options.username, options.password);
        //has to be after open
        if(!sync) {
            xhr.withCredentials = !!options.withCredentials;
        }
        // Cannot set timeout with sync request
        // not setting timeout on the xhr object, because of old webkits etc. not handling that correctly
        // both npm's request and jquery 1.x use this kind of timeout, so this is being consistent
        if (!sync && options.timeout > 0 ) {
            timeoutTimer = setTimeout(function(){
                if (aborted) return
                aborted = true;//IE9 may still call readystatechange
                xhr.abort("timeout");
                var e = new Error("XMLHttpRequest timeout");
                e.code = "ETIMEDOUT";
                errorFunc(e);
            }, options.timeout );
        }

        if (xhr.setRequestHeader) {
            for(key in headers){
                if(headers.hasOwnProperty(key)){
                    xhr.setRequestHeader(key, headers[key]);
                }
            }
        } else if (options.headers && !isEmpty(options.headers)) {
            throw new Error("Headers cannot be set on an XDomainRequest object")
        }

        if ("responseType" in options) {
            xhr.responseType = options.responseType;
        }

        if ("beforeSend" in options &&
            typeof options.beforeSend === "function"
        ) {
            options.beforeSend(xhr);
        }

        // Microsoft Edge browser sends "undefined" when send is called with undefined value.
        // XMLHttpRequest spec says to pass null as body to indicate no body
        // See https://github.com/naugtur/xhr/issues/100.
        xhr.send(body || null);

        return xhr


    }

    function getXml(xhr) {
        if (xhr.responseType === "document") {
            return xhr.responseXML
        }
        var firefoxBugTakenEffect = xhr.responseXML && xhr.responseXML.documentElement.nodeName === "parsererror";
        if (xhr.responseType === "" && !firefoxBugTakenEffect) {
            return xhr.responseXML
        }

        return null
    }

    function noop() {}

    /**
     * @file text-track.js
     */
    /**
     * Takes a webvtt file contents and parses it into cues
     *
     * @param {string} srcContent
     *        webVTT file contents
     *
     * @param {TextTrack} track
     *        TextTrack to add cues to. Cues come from the srcContent.
     *
     * @private
     */
    var parseCues = function parseCues(srcContent, track) {
        var parser = new window_1.WebVTT.Parser(window_1, window_1.vttjs, window_1.WebVTT.StringDecoder());
        var errors = [];

        parser.oncue = function (cue) {
            track.addCue(cue);
        };

        parser.onparsingerror = function (error) {
            errors.push(error);
        };

        parser.onflush = function () {
            track.trigger({
                type: 'loadeddata',
                target: track
            });
        };

        parser.parse(srcContent);
        if (errors.length > 0) {
            if (window_1.console && window_1.console.groupCollapsed) {
                window_1.console.groupCollapsed('Text Track parsing errors for ' + track.src);
            }
            errors.forEach(function (error) {
                return log$1.error(error);
            });
            if (window_1.console && window_1.console.groupEnd) {
                window_1.console.groupEnd();
            }
        }

        parser.flush();
    };

    /**
     * Load a `TextTrack` from a specifed url.
     *
     * @param {string} src
     *        Url to load track from.
     *
     * @param {TextTrack} track
     *        Track to add cues to. Comes from the content at the end of `url`.
     *
     * @private
     */
    var loadTrack = function loadTrack(src, track) {
        var opts = {
            uri: src
        };
        var crossOrigin = isCrossOrigin(src);

        if (crossOrigin) {
            opts.cors = crossOrigin;
        }

        xhr(opts, bind(this, function (err, response, responseBody) {
            if (err) {
                return log$1.error(err, response);
            }

            track.loaded_ = true;

            // Make sure that vttjs has loaded, otherwise, wait till it finished loading
            // NOTE: this is only used for the alt/video.novtt.js build
            if (typeof window_1.WebVTT !== 'function') {
                if (track.tech_) {
                    var loadHandler = function loadHandler() {
                        return parseCues(responseBody, track);
                    };

                    track.tech_.on('vttjsloaded', loadHandler);
                    track.tech_.on('vttjserror', function () {
                        log$1.error('vttjs failed to load, stopping trying to process ' + track.src);
                        track.tech_.off('vttjsloaded', loadHandler);
                    });
                }
            } else {
                parseCues(responseBody, track);
            }
        }));
    };

    /**
     * A representation of a single `TextTrack`.
     *
     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrack}
     * @extends Track
     */

    var TextTrack = function (_Track) {
        inherits(TextTrack, _Track);

        /**
         * Create an instance of this class.
         *
         * @param {Object} options={}
         *        Object of option names and values
         *
         * @param {Tech} options.tech
         *        A reference to the tech that owns this TextTrack.
         *
         * @param {TextTrack~Kind} [options.kind='subtitles']
         *        A valid text track kind.
         *
         * @param {TextTrack~Mode} [options.mode='disabled']
         *        A valid text track mode.
         *
         * @param {string} [options.id='vjs_track_' + Guid.newGUID()]
         *        A unique id for this TextTrack.
         *
         * @param {string} [options.label='']
         *        The menu label for this track.
         *
         * @param {string} [options.language='']
         *        A valid two character language code.
         *
         * @param {string} [options.srclang='']
         *        A valid two character language code. An alternative, but deprioritized
         *        vesion of `options.language`
         *
         * @param {string} [options.src]
         *        A url to TextTrack cues.
         *
         * @param {boolean} [options.default]
         *        If this track should default to on or off.
         */
        function TextTrack() {
            var _this, _ret;

            var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
            classCallCheck(this, TextTrack);

            if (!options.tech) {
                throw new Error('A tech was not provided.');
            }

            var settings = mergeOptions(options, {
                kind: TextTrackKind[options.kind] || 'subtitles',
                language: options.language || options.srclang || ''
            });
            var mode = TextTrackMode[settings.mode] || 'disabled';
            var default_ = settings['default'];

            if (settings.kind === 'metadata' || settings.kind === 'chapters') {
                mode = 'hidden';
            }
            // on IE8 this will be a document element
            // for every other browser this will be a normal object
            var tt = (_this = possibleConstructorReturn(this, _Track.call(this, settings)), _this);

            tt.tech_ = settings.tech;

            if (IS_IE8) {
                for (var prop in TextTrack.prototype) {
                    if (prop !== 'constructor') {
                        tt[prop] = TextTrack.prototype[prop];
                    }
                }
            }

            tt.cues_ = [];
            tt.activeCues_ = [];

            var cues = new TextTrackCueList(tt.cues_);
            var activeCues = new TextTrackCueList(tt.activeCues_);
            var changed = false;
            var timeupdateHandler = bind(tt, function () {

                // Accessing this.activeCues for the side-effects of updating itself
                // due to it's nature as a getter function. Do not remove or cues will
                // stop updating!
                /* eslint-disable no-unused-expressions */
                this.activeCues;
                /* eslint-enable no-unused-expressions */
                if (changed) {
                    this.trigger('cuechange');
                    changed = false;
                }
            });

            if (mode !== 'disabled') {
                tt.tech_.ready(function () {
                    tt.tech_.on('timeupdate', timeupdateHandler);
                }, true);
            }

            /**
             * @memberof TextTrack
             * @member {boolean} default
             *         If this track was set to be on or off by default. Cannot be changed after
             *         creation.
             * @instance
             *
             * @readonly
             */
            Object.defineProperty(tt, 'default', {
                get: function get$$1() {
                    return default_;
                },
                set: function set$$1() {}
            });

            /**
             * @memberof TextTrack
             * @member {string} mode
             *         Set the mode of this TextTrack to a valid {@link TextTrack~Mode}. Will
             *         not be set if setting to an invalid mode.
             * @instance
             *
             * @fires TextTrack#modechange
             */
            Object.defineProperty(tt, 'mode', {
                get: function get$$1() {
                    return mode;
                },
                set: function set$$1(newMode) {
                    var _this2 = this;

                    if (!TextTrackMode[newMode]) {
                        return;
                    }
                    mode = newMode;
                    if (mode === 'showing') {

                        this.tech_.ready(function () {
                            _this2.tech_.on('timeupdate', timeupdateHandler);
                        }, true);
                    }
                    /**
                     * An event that fires when mode changes on this track. This allows
                     * the TextTrackList that holds this track to act accordingly.
                     *
                     * > Note: This is not part of the spec!
                     *
                     * @event TextTrack#modechange
                     * @type {EventTarget~Event}
                     */
                    this.trigger('modechange');
                }
            });

            /**
             * @memberof TextTrack
             * @member {TextTrackCueList} cues
             *         The text track cue list for this TextTrack.
             * @instance
             */
            Object.defineProperty(tt, 'cues', {
                get: function get$$1() {
                    if (!this.loaded_) {
                        return null;
                    }

                    return cues;
                },
                set: function set$$1() {}
            });

            /**
             * @memberof TextTrack
             * @member {TextTrackCueList} activeCues
             *         The list text track cues that are currently active for this TextTrack.
             * @instance
             */
            Object.defineProperty(tt, 'activeCues', {
                get: function get$$1() {
                    if (!this.loaded_) {
                        return null;
                    }

                    // nothing to do
                    if (this.cues.length === 0) {
                        return activeCues;
                    }

                    var ct = this.tech_.currentTime();
                    var active = [];

                    for (var i = 0, l = this.cues.length; i < l; i++) {
                        var cue = this.cues[i];

                        if (cue.startTime <= ct && cue.endTime >= ct) {
                            active.push(cue);
                        } else if (cue.startTime === cue.endTime && cue.startTime <= ct && cue.startTime + 0.5 >= ct) {
                            active.push(cue);
                        }
                    }

                    changed = false;

                    if (active.length !== this.activeCues_.length) {
                        changed = true;
                    } else {
                        for (var _i = 0; _i < active.length; _i++) {
                            if (this.activeCues_.indexOf(active[_i]) === -1) {
                                changed = true;
                            }
                        }
                    }

                    this.activeCues_ = active;
                    activeCues.setCues_(this.activeCues_);

                    return activeCues;
                },
                set: function set$$1() {}
            });

            if (settings.src) {
                tt.src = settings.src;
                loadTrack(settings.src, tt);
            } else {
                tt.loaded_ = true;
            }

            return _ret = tt, possibleConstructorReturn(_this, _ret);
        }

        /**
         * Add a cue to the internal list of cues.
         *
         * @param {TextTrack~Cue} cue
         *        The cue to add to our internal list
         */


        TextTrack.prototype.addCue = function addCue(originalCue) {
            var cue = originalCue;

            if (window_1.vttjs && !(originalCue instanceof window_1.vttjs.VTTCue)) {
                cue = new window_1.vttjs.VTTCue(originalCue.startTime, originalCue.endTime, originalCue.text);

                for (var prop in originalCue) {
                    if (!(prop in cue)) {
                        cue[prop] = originalCue[prop];
                    }
                }

                // make sure that `id` is copied over
                cue.id = originalCue.id;
                cue.originalCue_ = originalCue;
            }

            var tracks = this.tech_.textTracks();

            for (var i = 0; i < tracks.length; i++) {
                if (tracks[i] !== this) {
                    tracks[i].removeCue(cue);
                }
            }

            this.cues_.push(cue);
            this.cues.setCues_(this.cues_);
        };

        /**
         * Remove a cue from our internal list
         *
         * @param {TextTrack~Cue} removeCue
         *        The cue to remove from our internal list
         */


        TextTrack.prototype.removeCue = function removeCue(_removeCue) {
            var i = this.cues_.length;

            while (i--) {
                var cue = this.cues_[i];

                if (cue === _removeCue || cue.originalCue_ && cue.originalCue_ === _removeCue) {
                    this.cues_.splice(i, 1);
                    this.cues.setCues_(this.cues_);
                    break;
                }
            }
        };

        return TextTrack;
    }(Track);

    /**
     * cuechange - One or more cues in the track have become active or stopped being active.
     */


    TextTrack.prototype.allowedEvents_ = {
        cuechange: 'cuechange'
    };

    /**
     * A representation of a single `AudioTrack`. If it is part of an {@link AudioTrackList}
     * only one `AudioTrack` in the list will be enabled at a time.
     *
     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotrack}
     * @extends Track
     */

    var AudioTrack = function (_Track) {
        inherits(AudioTrack, _Track);

        /**
         * Create an instance of this class.
         *
         * @param {Object} [options={}]
         *        Object of option names and values
         *
         * @param {AudioTrack~Kind} [options.kind='']
         *        A valid audio track kind
         *
         * @param {string} [options.id='vjs_track_' + Guid.newGUID()]
         *        A unique id for this AudioTrack.
         *
         * @param {string} [options.label='']
         *        The menu label for this track.
         *
         * @param {string} [options.language='']
         *        A valid two character language code.
         *
         * @param {boolean} [options.enabled]
         *        If this track is the one that is currently playing. If this track is part of
         *        an {@link AudioTrackList}, only one {@link AudioTrack} will be enabled.
         */
        function AudioTrack() {
            var _this, _ret;

            var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
            classCallCheck(this, AudioTrack);

            var settings = mergeOptions(options, {
                kind: AudioTrackKind[options.kind] || ''
            });
            // on IE8 this will be a document element
            // for every other browser this will be a normal object
            var track = (_this = possibleConstructorReturn(this, _Track.call(this, settings)), _this);
            var enabled = false;

            if (IS_IE8) {
                for (var prop in AudioTrack.prototype) {
                    if (prop !== 'constructor') {
                        track[prop] = AudioTrack.prototype[prop];
                    }
                }
            }
            /**
             * @memberof AudioTrack
             * @member {boolean} enabled
             *         If this `AudioTrack` is enabled or not. When setting this will
             *         fire {@link AudioTrack#enabledchange} if the state of enabled is changed.
             * @instance
             *
             * @fires VideoTrack#selectedchange
             */
            Object.defineProperty(track, 'enabled', {
                get: function get$$1() {
                    return enabled;
                },
                set: function set$$1(newEnabled) {
                    // an invalid or unchanged value
                    if (typeof newEnabled !== 'boolean' || newEnabled === enabled) {
                        return;
                    }
                    enabled = newEnabled;

                    /**
                     * An event that fires when enabled changes on this track. This allows
                     * the AudioTrackList that holds this track to act accordingly.
                     *
                     * > Note: This is not part of the spec! Native tracks will do
                     *         this internally without an event.
                     *
                     * @event AudioTrack#enabledchange
                     * @type {EventTarget~Event}
                     */
                    this.trigger('enabledchange');
                }
            });

            // if the user sets this track to selected then
            // set selected to that true value otherwise
            // we keep it false
            if (settings.enabled) {
                track.enabled = settings.enabled;
            }
            track.loaded_ = true;

            return _ret = track, possibleConstructorReturn(_this, _ret);
        }

        return AudioTrack;
    }(Track);

    /**
     * A representation of a single `VideoTrack`.
     *
     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#videotrack}
     * @extends Track
     */

    var VideoTrack = function (_Track) {
        inherits(VideoTrack, _Track);

        /**
         * Create an instance of this class.
         *
         * @param {Object} [options={}]
         *        Object of option names and values
         *
         * @param {string} [options.kind='']
         *        A valid {@link VideoTrack~Kind}
         *
         * @param {string} [options.id='vjs_track_' + Guid.newGUID()]
         *        A unique id for this AudioTrack.
         *
         * @param {string} [options.label='']
         *        The menu label for this track.
         *
         * @param {string} [options.language='']
         *        A valid two character language code.
         *
         * @param {boolean} [options.selected]
         *        If this track is the one that is currently playing.
         */
        function VideoTrack() {
            var _this, _ret;

            var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
            classCallCheck(this, VideoTrack);

            var settings = mergeOptions(options, {
                kind: VideoTrackKind[options.kind] || ''
            });

            // on IE8 this will be a document element
            // for every other browser this will be a normal object
            var track = (_this = possibleConstructorReturn(this, _Track.call(this, settings)), _this);
            var selected = false;

            if (IS_IE8) {
                for (var prop in VideoTrack.prototype) {
                    if (prop !== 'constructor') {
                        track[prop] = VideoTrack.prototype[prop];
                    }
                }
            }

            /**
             * @memberof VideoTrack
             * @member {boolean} selected
             *         If this `VideoTrack` is selected or not. When setting this will
             *         fire {@link VideoTrack#selectedchange} if the state of selected changed.
             * @instance
             *
             * @fires VideoTrack#selectedchange
             */
            Object.defineProperty(track, 'selected', {
                get: function get$$1() {
                    return selected;
                },
                set: function set$$1(newSelected) {
                    // an invalid or unchanged value
                    if (typeof newSelected !== 'boolean' || newSelected === selected) {
                        return;
                    }
                    selected = newSelected;

                    /**
                     * An event that fires when selected changes on this track. This allows
                     * the VideoTrackList that holds this track to act accordingly.
                     *
                     * > Note: This is not part of the spec! Native tracks will do
                     *         this internally without an event.
                     *
                     * @event VideoTrack#selectedchange
                     * @type {EventTarget~Event}
                     */
                    this.trigger('selectedchange');
                }
            });

            // if the user sets this track to selected then
            // set selected to that true value otherwise
            // we keep it false
            if (settings.selected) {
                track.selected = settings.selected;
            }

            return _ret = track, possibleConstructorReturn(_this, _ret);
        }

        return VideoTrack;
    }(Track);

    /**
     * @file html-track-element.js
     */

    /**
     * @memberof HTMLTrackElement
     * @typedef {HTMLTrackElement~ReadyState}
     * @enum {number}
     */
    var NONE = 0;
    var LOADING = 1;
    var LOADED = 2;
    var ERROR = 3;

    /**
     * A single track represented in the DOM.
     *
     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#htmltrackelement}
     * @extends EventTarget
     */

    var HTMLTrackElement = function (_EventTarget) {
        inherits(HTMLTrackElement, _EventTarget);

        /**
         * Create an instance of this class.
         *
         * @param {Object} options={}
         *        Object of option names and values
         *
         * @param {Tech} options.tech
         *        A reference to the tech that owns this HTMLTrackElement.
         *
         * @param {TextTrack~Kind} [options.kind='subtitles']
         *        A valid text track kind.
         *
         * @param {TextTrack~Mode} [options.mode='disabled']
         *        A valid text track mode.
         *
         * @param {string} [options.id='vjs_track_' + Guid.newGUID()]
         *        A unique id for this TextTrack.
         *
         * @param {string} [options.label='']
         *        The menu label for this track.
         *
         * @param {string} [options.language='']
         *        A valid two character language code.
         *
         * @param {string} [options.srclang='']
         *        A valid two character language code. An alternative, but deprioritized
         *        vesion of `options.language`
         *
         * @param {string} [options.src]
         *        A url to TextTrack cues.
         *
         * @param {boolean} [options.default]
         *        If this track should default to on or off.
         */
        function HTMLTrackElement() {
            var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
            classCallCheck(this, HTMLTrackElement);

            var _this = possibleConstructorReturn(this, _EventTarget.call(this));

            var readyState = void 0;
            var trackElement = _this; // eslint-disable-line

            if (IS_IE8) {
                trackElement = document_1.createElement('custom');

                for (var prop in HTMLTrackElement.prototype) {
                    if (prop !== 'constructor') {
                        trackElement[prop] = HTMLTrackElement.prototype[prop];
                    }
                }
            }

            var track = new TextTrack(options);

            trackElement.kind = track.kind;
            trackElement.src = track.src;
            trackElement.srclang = track.language;
            trackElement.label = track.label;
            trackElement['default'] = track['default'];

            /**
             * @memberof HTMLTrackElement
             * @member {HTMLTrackElement~ReadyState} readyState
             *         The current ready state of the track element.
             * @instance
             */
            Object.defineProperty(trackElement, 'readyState', {
                get: function get$$1() {
                    return readyState;
                }
            });

            /**
             * @memberof HTMLTrackElement
             * @member {TextTrack} track
             *         The underlying TextTrack object.
             * @instance
             *
             */
            Object.defineProperty(trackElement, 'track', {
                get: function get$$1() {
                    return track;
                }
            });

            readyState = NONE;

            /**
             * @listens TextTrack#loadeddata
             * @fires HTMLTrackElement#load
             */
            track.addEventListener('loadeddata', function () {
                readyState = LOADED;

                trackElement.trigger({
                    type: 'load',
                    target: trackElement
                });
            });

            if (IS_IE8) {
                var _ret;

                return _ret = trackElement, possibleConstructorReturn(_this, _ret);
            }
            return _this;
        }

        return HTMLTrackElement;
    }(EventTarget);

    HTMLTrackElement.prototype.allowedEvents_ = {
        load: 'load'
    };

    HTMLTrackElement.NONE = NONE;
    HTMLTrackElement.LOADING = LOADING;
    HTMLTrackElement.LOADED = LOADED;
    HTMLTrackElement.ERROR = ERROR;

    /*
     * This file contains all track properties that are used in
     * player.js, tech.js, html5.js and possibly other techs in the future.
     */

    var NORMAL = {
        audio: {
            ListClass: AudioTrackList,
            TrackClass: AudioTrack,
            capitalName: 'Audio'
        },
        video: {
            ListClass: VideoTrackList,
            TrackClass: VideoTrack,
            capitalName: 'Video'
        },
        text: {
            ListClass: TextTrackList,
            TrackClass: TextTrack,
            capitalName: 'Text'
        }
    };

    Object.keys(NORMAL).forEach(function (type) {
        NORMAL[type].getterName = type + 'Tracks';
        NORMAL[type].privateName = type + 'Tracks_';
    });

    var REMOTE = {
        remoteText: {
            ListClass: TextTrackList,
            TrackClass: TextTrack,
            capitalName: 'RemoteText',
            getterName: 'remoteTextTracks',
            privateName: 'remoteTextTracks_'
        },
        remoteTextEl: {
            ListClass: HtmlTrackElementList,
            TrackClass: HTMLTrackElement,
            capitalName: 'RemoteTextTrackEls',
            getterName: 'remoteTextTrackEls',
            privateName: 'remoteTextTrackEls_'
        }
    };

    var ALL = mergeOptions(NORMAL, REMOTE);

    REMOTE.names = Object.keys(REMOTE);
    NORMAL.names = Object.keys(NORMAL);
    ALL.names = [].concat(REMOTE.names).concat(NORMAL.names);

    /**
     * Copyright 2013 vtt.js Contributors
     *
     * Licensed under the Apache License, Version 2.0 (the "License");
     * you may not use this file except in compliance with the License.
     * You may obtain a copy of the License at
     *
     *   http://www.apache.org/licenses/LICENSE-2.0
     *
     * Unless required by applicable law or agreed to in writing, software
     * distributed under the License is distributed on an "AS IS" BASIS,
     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     * See the License for the specific language governing permissions and
     * limitations under the License.
     */

    /* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
    /* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
    var _objCreate = Object.create || (function() {
            function F() {}
            return function(o) {
                if (arguments.length !== 1) {
                    throw new Error('Object.create shim only accepts one parameter.');
                }
                F.prototype = o;
                return new F();
            };
        })();

// Creates a new ParserError object from an errorData object. The errorData
// object should have default code and message properties. The default message
// property can be overriden by passing in a message parameter.
// See ParsingError.Errors below for acceptable errors.
    function ParsingError(errorData, message) {
        this.name = "ParsingError";
        this.code = errorData.code;
        this.message = message || errorData.message;
    }
    ParsingError.prototype = _objCreate(Error.prototype);
    ParsingError.prototype.constructor = ParsingError;

// ParsingError metadata for acceptable ParsingErrors.
    ParsingError.Errors = {
        BadSignature: {
            code: 0,
            message: "Malformed WebVTT signature."
        },
        BadTimeStamp: {
            code: 1,
            message: "Malformed time stamp."
        }
    };

// Try to parse input as a time stamp.
    function parseTimeStamp(input) {

        function computeSeconds(h, m, s, f) {
            return (h | 0) * 3600 + (m | 0) * 60 + (s | 0) + (f | 0) / 1000;
        }

        var m = input.match(/^(\d+):(\d{2})(:\d{2})?\.(\d{3})/);
        if (!m) {
            return null;
        }

        if (m[3]) {
            // Timestamp takes the form of [hours]:[minutes]:[seconds].[milliseconds]
            return computeSeconds(m[1], m[2], m[3].replace(":", ""), m[4]);
        } else if (m[1] > 59) {
            // Timestamp takes the form of [hours]:[minutes].[milliseconds]
            // First position is hours as it's over 59.
            return computeSeconds(m[1], m[2], 0,  m[4]);
        } else {
            // Timestamp takes the form of [minutes]:[seconds].[milliseconds]
            return computeSeconds(0, m[1], m[2], m[4]);
        }
    }

// A settings object holds key/value pairs and will ignore anything but the first
// assignment to a specific key.
    function Settings() {
        this.values = _objCreate(null);
    }

    Settings.prototype = {
        // Only accept the first assignment to any key.
        set: function(k, v) {
            if (!this.get(k) && v !== "") {
                this.values[k] = v;
            }
        },
        // Return the value for a key, or a default value.
        // If 'defaultKey' is passed then 'dflt' is assumed to be an object with
        // a number of possible default values as properties where 'defaultKey' is
        // the key of the property that will be chosen; otherwise it's assumed to be
        // a single value.
        get: function(k, dflt, defaultKey) {
            if (defaultKey) {
                return this.has(k) ? this.values[k] : dflt[defaultKey];
            }
            return this.has(k) ? this.values[k] : dflt;
        },
        // Check whether we have a value for a key.
        has: function(k) {
            return k in this.values;
        },
        // Accept a setting if its one of the given alternatives.
        alt: function(k, v, a) {
            for (var n = 0; n < a.length; ++n) {
                if (v === a[n]) {
                    this.set(k, v);
                    break;
                }
            }
        },
        // Accept a setting if its a valid (signed) integer.
        integer: function(k, v) {
            if (/^-?\d+$/.test(v)) { // integer
                this.set(k, parseInt(v, 10));
            }
        },
        // Accept a setting if its a valid percentage.
        percent: function(k, v) {
            var m;
            if ((m = v.match(/^([\d]{1,3})(\.[\d]*)?%$/))) {
                v = parseFloat(v);
                if (v >= 0 && v <= 100) {
                    this.set(k, v);
                    return true;
                }
            }
            return false;
        }
    };

// Helper function to parse input into groups separated by 'groupDelim', and
// interprete each group as a key/value pair separated by 'keyValueDelim'.
    function parseOptions(input, callback, keyValueDelim, groupDelim) {
        var groups = groupDelim ? input.split(groupDelim) : [input];
        for (var i in groups) {
            if (typeof groups[i] !== "string") {
                continue;
            }
            var kv = groups[i].split(keyValueDelim);
            if (kv.length !== 2) {
                continue;
            }
            var k = kv[0];
            var v = kv[1];
            callback(k, v);
        }
    }

    function parseCue(input, cue, regionList) {
        // Remember the original input if we need to throw an error.
        var oInput = input;
        // 4.1 WebVTT timestamp
        function consumeTimeStamp() {
            var ts = parseTimeStamp(input);
            if (ts === null) {
                throw new ParsingError(ParsingError.Errors.BadTimeStamp,
                    "Malformed timestamp: " + oInput);
            }
            // Remove time stamp from input.
            input = input.replace(/^[^\sa-zA-Z-]+/, "");
            return ts;
        }

        // 4.4.2 WebVTT cue settings
        function consumeCueSettings(input, cue) {
            var settings = new Settings();

            parseOptions(input, function (k, v) {
                switch (k) {
                    case "region":
                        // Find the last region we parsed with the same region id.
                        for (var i = regionList.length - 1; i >= 0; i--) {
                            if (regionList[i].id === v) {
                                settings.set(k, regionList[i].region);
                                break;
                            }
                        }
                        break;
                    case "vertical":
                        settings.alt(k, v, ["rl", "lr"]);
                        break;
                    case "line":
                        var vals = v.split(","),
                            vals0 = vals[0];
                        settings.integer(k, vals0);
                        settings.percent(k, vals0) ? settings.set("snapToLines", false) : null;
                        settings.alt(k, vals0, ["auto"]);
                        if (vals.length === 2) {
                            settings.alt("lineAlign", vals[1], ["start", "middle", "end"]);
                        }
                        break;
                    case "position":
                        vals = v.split(",");
                        settings.percent(k, vals[0]);
                        if (vals.length === 2) {
                            settings.alt("positionAlign", vals[1], ["start", "middle", "end"]);
                        }
                        break;
                    case "size":
                        settings.percent(k, v);
                        break;
                    case "align":
                        settings.alt(k, v, ["start", "middle", "end", "left", "right"]);
                        break;
                }
            }, /:/, /\s/);

            // Apply default values for any missing fields.
            cue.region = settings.get("region", null);
            cue.vertical = settings.get("vertical", "");
            cue.line = settings.get("line", "auto");
            cue.lineAlign = settings.get("lineAlign", "start");
            cue.snapToLines = settings.get("snapToLines", true);
            cue.size = settings.get("size", 100);
            cue.align = settings.get("align", "middle");
            cue.position = settings.get("position", {
                start: 0,
                left: 0,
                middle: 50,
                end: 100,
                right: 100
            }, cue.align);
            cue.positionAlign = settings.get("positionAlign", {
                start: "start",
                left: "start",
                middle: "middle",
                end: "end",
                right: "end"
            }, cue.align);
        }

        function skipWhitespace() {
            input = input.replace(/^\s+/, "");
        }

        // 4.1 WebVTT cue timings.
        skipWhitespace();
        cue.startTime = consumeTimeStamp();   // (1) collect cue start time
        skipWhitespace();
        if (input.substr(0, 3) !== "-->") {     // (3) next characters must match "-->"
            throw new ParsingError(ParsingError.Errors.BadTimeStamp,
                "Malformed time stamp (time stamps must be separated by '-->'): " +
                oInput);
        }
        input = input.substr(3);
        skipWhitespace();
        cue.endTime = consumeTimeStamp();     // (5) collect cue end time

        // 4.1 WebVTT cue settings list.
        skipWhitespace();
        consumeCueSettings(input, cue);
    }

    var ESCAPE = {
        "&amp;": "&",
        "&lt;": "<",
        "&gt;": ">",
        "&lrm;": "\u200e",
        "&rlm;": "\u200f",
        "&nbsp;": "\u00a0"
    };

    var TAG_NAME = {
        c: "span",
        i: "i",
        b: "b",
        u: "u",
        ruby: "ruby",
        rt: "rt",
        v: "span",
        lang: "span"
    };

    var TAG_ANNOTATION = {
        v: "title",
        lang: "lang"
    };

    var NEEDS_PARENT = {
        rt: "ruby"
    };

// Parse content into a document fragment.
    function parseContent(window, input) {
        function nextToken() {
            // Check for end-of-string.
            if (!input) {
                return null;
            }

            // Consume 'n' characters from the input.
            function consume(result) {
                input = input.substr(result.length);
                return result;
            }

            var m = input.match(/^([^<]*)(<[^>]+>?)?/);
            // If there is some text before the next tag, return it, otherwise return
            // the tag.
            return consume(m[1] ? m[1] : m[2]);
        }

        // Unescape a string 's'.
        function unescape1(e) {
            return ESCAPE[e];
        }
        function unescape(s) {
            while ((m = s.match(/&(amp|lt|gt|lrm|rlm|nbsp);/))) {
                s = s.replace(m[0], unescape1);
            }
            return s;
        }

        function shouldAdd(current, element) {
            return !NEEDS_PARENT[element.localName] ||
                NEEDS_PARENT[element.localName] === current.localName;
        }

        // Create an element for this tag.
        function createElement(type, annotation) {
            var tagName = TAG_NAME[type];
            if (!tagName) {
                return null;
            }
            var element = window.document.createElement(tagName);
            element.localName = tagName;
            var name = TAG_ANNOTATION[type];
            if (name && annotation) {
                element[name] = annotation.trim();
            }
            return element;
        }

        var rootDiv = window.document.createElement("div"),
            current = rootDiv,
            t,
            tagStack = [];

        while ((t = nextToken()) !== null) {
            if (t[0] === '<') {
                if (t[1] === "/") {
                    // If the closing tag matches, move back up to the parent node.
                    if (tagStack.length &&
                        tagStack[tagStack.length - 1] === t.substr(2).replace(">", "")) {
                        tagStack.pop();
                        current = current.parentNode;
                    }
                    // Otherwise just ignore the end tag.
                    continue;
                }
                var ts = parseTimeStamp(t.substr(1, t.length - 2));
                var node;
                if (ts) {
                    // Timestamps are lead nodes as well.
                    node = window.document.createProcessingInstruction("timestamp", ts);
                    current.appendChild(node);
                    continue;
                }
                var m = t.match(/^<([^.\s/0-9>]+)(\.[^\s\\>]+)?([^>\\]+)?(\\?)>?$/);
                // If we can't parse the tag, skip to the next tag.
                if (!m) {
                    continue;
                }
                // Try to construct an element, and ignore the tag if we couldn't.
                node = createElement(m[1], m[3]);
                if (!node) {
                    continue;
                }
                // Determine if the tag should be added based on the context of where it
                // is placed in the cuetext.
                if (!shouldAdd(current, node)) {
                    continue;
                }
                // Set the class list (as a list of classes, separated by space).
                if (m[2]) {
                    node.className = m[2].substr(1).replace('.', ' ');
                }
                // Append the node to the current node, and enter the scope of the new
                // node.
                tagStack.push(m[1]);
                current.appendChild(node);
                current = node;
                continue;
            }

            // Text nodes are leaf nodes.
            current.appendChild(window.document.createTextNode(unescape(t)));
        }

        return rootDiv;
    }

// This is a list of all the Unicode characters that have a strong
// right-to-left category. What this means is that these characters are
// written right-to-left for sure. It was generated by pulling all the strong
// right-to-left characters out of the Unicode data table. That table can
// found at: http://www.unicode.org/Public/UNIDATA/UnicodeData.txt
    var strongRTLRanges = [[0x5be, 0x5be], [0x5c0, 0x5c0], [0x5c3, 0x5c3], [0x5c6, 0x5c6],
        [0x5d0, 0x5ea], [0x5f0, 0x5f4], [0x608, 0x608], [0x60b, 0x60b], [0x60d, 0x60d],
        [0x61b, 0x61b], [0x61e, 0x64a], [0x66d, 0x66f], [0x671, 0x6d5], [0x6e5, 0x6e6],
        [0x6ee, 0x6ef], [0x6fa, 0x70d], [0x70f, 0x710], [0x712, 0x72f], [0x74d, 0x7a5],
        [0x7b1, 0x7b1], [0x7c0, 0x7ea], [0x7f4, 0x7f5], [0x7fa, 0x7fa], [0x800, 0x815],
        [0x81a, 0x81a], [0x824, 0x824], [0x828, 0x828], [0x830, 0x83e], [0x840, 0x858],
        [0x85e, 0x85e], [0x8a0, 0x8a0], [0x8a2, 0x8ac], [0x200f, 0x200f],
        [0xfb1d, 0xfb1d], [0xfb1f, 0xfb28], [0xfb2a, 0xfb36], [0xfb38, 0xfb3c],
        [0xfb3e, 0xfb3e], [0xfb40, 0xfb41], [0xfb43, 0xfb44], [0xfb46, 0xfbc1],
        [0xfbd3, 0xfd3d], [0xfd50, 0xfd8f], [0xfd92, 0xfdc7], [0xfdf0, 0xfdfc],
        [0xfe70, 0xfe74], [0xfe76, 0xfefc], [0x10800, 0x10805], [0x10808, 0x10808],
        [0x1080a, 0x10835], [0x10837, 0x10838], [0x1083c, 0x1083c], [0x1083f, 0x10855],
        [0x10857, 0x1085f], [0x10900, 0x1091b], [0x10920, 0x10939], [0x1093f, 0x1093f],
        [0x10980, 0x109b7], [0x109be, 0x109bf], [0x10a00, 0x10a00], [0x10a10, 0x10a13],
        [0x10a15, 0x10a17], [0x10a19, 0x10a33], [0x10a40, 0x10a47], [0x10a50, 0x10a58],
        [0x10a60, 0x10a7f], [0x10b00, 0x10b35], [0x10b40, 0x10b55], [0x10b58, 0x10b72],
        [0x10b78, 0x10b7f], [0x10c00, 0x10c48], [0x1ee00, 0x1ee03], [0x1ee05, 0x1ee1f],
        [0x1ee21, 0x1ee22], [0x1ee24, 0x1ee24], [0x1ee27, 0x1ee27], [0x1ee29, 0x1ee32],
        [0x1ee34, 0x1ee37], [0x1ee39, 0x1ee39], [0x1ee3b, 0x1ee3b], [0x1ee42, 0x1ee42],
        [0x1ee47, 0x1ee47], [0x1ee49, 0x1ee49], [0x1ee4b, 0x1ee4b], [0x1ee4d, 0x1ee4f],
        [0x1ee51, 0x1ee52], [0x1ee54, 0x1ee54], [0x1ee57, 0x1ee57], [0x1ee59, 0x1ee59],
        [0x1ee5b, 0x1ee5b], [0x1ee5d, 0x1ee5d], [0x1ee5f, 0x1ee5f], [0x1ee61, 0x1ee62],
        [0x1ee64, 0x1ee64], [0x1ee67, 0x1ee6a], [0x1ee6c, 0x1ee72], [0x1ee74, 0x1ee77],
        [0x1ee79, 0x1ee7c], [0x1ee7e, 0x1ee7e], [0x1ee80, 0x1ee89], [0x1ee8b, 0x1ee9b],
        [0x1eea1, 0x1eea3], [0x1eea5, 0x1eea9], [0x1eeab, 0x1eebb], [0x10fffd, 0x10fffd]];

    function isStrongRTLChar(charCode) {
        for (var i = 0; i < strongRTLRanges.length; i++) {
            var currentRange = strongRTLRanges[i];
            if (charCode >= currentRange[0] && charCode <= currentRange[1]) {
                return true;
            }
        }

        return false;
    }

    function determineBidi(cueDiv) {
        var nodeStack = [],
            text = "",
            charCode;

        if (!cueDiv || !cueDiv.childNodes) {
            return "ltr";
        }

        function pushNodes(nodeStack, node) {
            for (var i = node.childNodes.length - 1; i >= 0; i--) {
                nodeStack.push(node.childNodes[i]);
            }
        }

        function nextTextNode(nodeStack) {
            if (!nodeStack || !nodeStack.length) {
                return null;
            }

            var node = nodeStack.pop(),
                text = node.textContent || node.innerText;
            if (text) {
                // TODO: This should match all unicode type B characters (paragraph
                // separator characters). See issue #115.
                var m = text.match(/^.*(\n|\r)/);
                if (m) {
                    nodeStack.length = 0;
                    return m[0];
                }
                return text;
            }
            if (node.tagName === "ruby") {
                return nextTextNode(nodeStack);
            }
            if (node.childNodes) {
                pushNodes(nodeStack, node);
                return nextTextNode(nodeStack);
            }
        }

        pushNodes(nodeStack, cueDiv);
        while ((text = nextTextNode(nodeStack))) {
            for (var i = 0; i < text.length; i++) {
                charCode = text.charCodeAt(i);
                if (isStrongRTLChar(charCode)) {
                    return "rtl";
                }
            }
        }
        return "ltr";
    }

    function computeLinePos(cue) {
        if (typeof cue.line === "number" &&
            (cue.snapToLines || (cue.line >= 0 && cue.line <= 100))) {
            return cue.line;
        }
        if (!cue.track || !cue.track.textTrackList ||
            !cue.track.textTrackList.mediaElement) {
            return -1;
        }
        var track = cue.track,
            trackList = track.textTrackList,
            count = 0;
        for (var i = 0; i < trackList.length && trackList[i] !== track; i++) {
            if (trackList[i].mode === "showing") {
                count++;
            }
        }
        return ++count * -1;
    }

    function StyleBox() {
    }

// Apply styles to a div. If there is no div passed then it defaults to the
// div on 'this'.
    StyleBox.prototype.applyStyles = function(styles, div) {
        div = div || this.div;
        for (var prop in styles) {
            if (styles.hasOwnProperty(prop)) {
                div.style[prop] = styles[prop];
            }
        }
    };

    StyleBox.prototype.formatStyle = function(val, unit) {
        return val === 0 ? 0 : val + unit;
    };

// Constructs the computed display state of the cue (a div). Places the div
// into the overlay which should be a block level element (usually a div).
    function CueStyleBox(window, cue, styleOptions) {
        var isIE8 = (/MSIE\s8\.0/).test(navigator.userAgent);
        var color = "rgba(255, 255, 255, 1)";
        var backgroundColor = "rgba(0, 0, 0, 0.8)";

        if (isIE8) {
            color = "rgb(255, 255, 255)";
            backgroundColor = "rgb(0, 0, 0)";
        }

        StyleBox.call(this);
        this.cue = cue;

        // Parse our cue's text into a DOM tree rooted at 'cueDiv'. This div will
        // have inline positioning and will function as the cue background box.
        this.cueDiv = parseContent(window, cue.text);
        var styles = {
            color: color,
            backgroundColor: backgroundColor,
            position: "relative",
            left: 0,
            right: 0,
            top: 0,
            bottom: 0,
            display: "inline"
        };

        if (!isIE8) {
            styles.writingMode = cue.vertical === "" ? "horizontal-tb"
                : cue.vertical === "lr" ? "vertical-lr"
                    : "vertical-rl";
            styles.unicodeBidi = "plaintext";
        }
        this.applyStyles(styles, this.cueDiv);

        // Create an absolutely positioned div that will be used to position the cue
        // div. Note, all WebVTT cue-setting alignments are equivalent to the CSS
        // mirrors of them except "middle" which is "center" in CSS.
        this.div = window.document.createElement("div");
        styles = {
            textAlign: cue.align === "middle" ? "center" : cue.align,
            font: styleOptions.font,
            whiteSpace: "pre-line",
            position: "absolute"
        };

        if (!isIE8) {
            styles.direction = determineBidi(this.cueDiv);
            styles.writingMode = cue.vertical === "" ? "horizontal-tb"
                : cue.vertical === "lr" ? "vertical-lr"
                    : "vertical-rl".
                        stylesunicodeBidi =  "plaintext";
        }

        this.applyStyles(styles);

        this.div.appendChild(this.cueDiv);

        // Calculate the distance from the reference edge of the viewport to the text
        // position of the cue box. The reference edge will be resolved later when
        // the box orientation styles are applied.
        var textPos = 0;
        switch (cue.positionAlign) {
            case "start":
                textPos = cue.position;
                break;
            case "middle":
                textPos = cue.position - (cue.size / 2);
                break;
            case "end":
                textPos = cue.position - cue.size;
                break;
        }

        // Horizontal box orientation; textPos is the distance from the left edge of the
        // area to the left edge of the box and cue.size is the distance extending to
        // the right from there.
        if (cue.vertical === "") {
            this.applyStyles({
                left:  this.formatStyle(textPos, "%"),
                width: this.formatStyle(cue.size, "%")
            });
            // Vertical box orientation; textPos is the distance from the top edge of the
            // area to the top edge of the box and cue.size is the height extending
            // downwards from there.
        } else {
            this.applyStyles({
                top: this.formatStyle(textPos, "%"),
                height: this.formatStyle(cue.size, "%")
            });
        }

        this.move = function(box) {
            this.applyStyles({
                top: this.formatStyle(box.top, "px"),
                bottom: this.formatStyle(box.bottom, "px"),
                left: this.formatStyle(box.left, "px"),
                right: this.formatStyle(box.right, "px"),
                height: this.formatStyle(box.height, "px"),
                width: this.formatStyle(box.width, "px")
            });
        };
    }
    CueStyleBox.prototype = _objCreate(StyleBox.prototype);
    CueStyleBox.prototype.constructor = CueStyleBox;

// Represents the co-ordinates of an Element in a way that we can easily
// compute things with such as if it overlaps or intersects with another Element.
// Can initialize it with either a StyleBox or another BoxPosition.
    function BoxPosition(obj) {
        var isIE8 = (/MSIE\s8\.0/).test(navigator.userAgent);

        // Either a BoxPosition was passed in and we need to copy it, or a StyleBox
        // was passed in and we need to copy the results of 'getBoundingClientRect'
        // as the object returned is readonly. All co-ordinate values are in reference
        // to the viewport origin (top left).
        var lh, height, width, top;
        if (obj.div) {
            height = obj.div.offsetHeight;
            width = obj.div.offsetWidth;
            top = obj.div.offsetTop;

            var rects = (rects = obj.div.childNodes) && (rects = rects[0]) &&
                rects.getClientRects && rects.getClientRects();
            obj = obj.div.getBoundingClientRect();
            // In certain cases the outter div will be slightly larger then the sum of
            // the inner div's lines. This could be due to bold text, etc, on some platforms.
            // In this case we should get the average line height and use that. This will
            // result in the desired behaviour.
            lh = rects ? Math.max((rects[0] && rects[0].height) || 0, obj.height / rects.length)
                : 0;

        }
        this.left = obj.left;
        this.right = obj.right;
        this.top = obj.top || top;
        this.height = obj.height || height;
        this.bottom = obj.bottom || (top + (obj.height || height));
        this.width = obj.width || width;
        this.lineHeight = lh !== undefined ? lh : obj.lineHeight;

        if (isIE8 && !this.lineHeight) {
            this.lineHeight = 13;
        }
    }

// Move the box along a particular axis. Optionally pass in an amount to move
// the box. If no amount is passed then the default is the line height of the
// box.
    BoxPosition.prototype.move = function(axis, toMove) {
        toMove = toMove !== undefined ? toMove : this.lineHeight;
        switch (axis) {
            case "+x":
                this.left += toMove;
                this.right += toMove;
                break;
            case "-x":
                this.left -= toMove;
                this.right -= toMove;
                break;
            case "+y":
                this.top += toMove;
                this.bottom += toMove;
                break;
            case "-y":
                this.top -= toMove;
                this.bottom -= toMove;
                break;
        }
    };

// Check if this box overlaps another box, b2.
    BoxPosition.prototype.overlaps = function(b2) {
        return this.left < b2.right &&
            this.right > b2.left &&
            this.top < b2.bottom &&
            this.bottom > b2.top;
    };

// Check if this box overlaps any other boxes in boxes.
    BoxPosition.prototype.overlapsAny = function(boxes) {
        for (var i = 0; i < boxes.length; i++) {
            if (this.overlaps(boxes[i])) {
                return true;
            }
        }
        return false;
    };

// Check if this box is within another box.
    BoxPosition.prototype.within = function(container) {
        return this.top >= container.top &&
            this.bottom <= container.bottom &&
            this.left >= container.left &&
            this.right <= container.right;
    };

// Check if this box is entirely within the container or it is overlapping
// on the edge opposite of the axis direction passed. For example, if "+x" is
// passed and the box is overlapping on the left edge of the container, then
// return true.
    BoxPosition.prototype.overlapsOppositeAxis = function(container, axis) {
        switch (axis) {
            case "+x":
                return this.left < container.left;
            case "-x":
                return this.right > container.right;
            case "+y":
                return this.top < container.top;
            case "-y":
                return this.bottom > container.bottom;
        }
    };

// Find the percentage of the area that this box is overlapping with another
// box.
    BoxPosition.prototype.intersectPercentage = function(b2) {
        var x = Math.max(0, Math.min(this.right, b2.right) - Math.max(this.left, b2.left)),
            y = Math.max(0, Math.min(this.bottom, b2.bottom) - Math.max(this.top, b2.top)),
            intersectArea = x * y;
        return intersectArea / (this.height * this.width);
    };

// Convert the positions from this box to CSS compatible positions using
// the reference container's positions. This has to be done because this
// box's positions are in reference to the viewport origin, whereas, CSS
// values are in referecne to their respective edges.
    BoxPosition.prototype.toCSSCompatValues = function(reference) {
        return {
            top: this.top - reference.top,
            bottom: reference.bottom - this.bottom,
            left: this.left - reference.left,
            right: reference.right - this.right,
            height: this.height,
            width: this.width
        };
    };

// Get an object that represents the box's position without anything extra.
// Can pass a StyleBox, HTMLElement, or another BoxPositon.
    BoxPosition.getSimpleBoxPosition = function(obj) {
        var height = obj.div ? obj.div.offsetHeight : obj.tagName ? obj.offsetHeight : 0;
        var width = obj.div ? obj.div.offsetWidth : obj.tagName ? obj.offsetWidth : 0;
        var top = obj.div ? obj.div.offsetTop : obj.tagName ? obj.offsetTop : 0;

        obj = obj.div ? obj.div.getBoundingClientRect() :
            obj.tagName ? obj.getBoundingClientRect() : obj;
        var ret = {
            left: obj.left,
            right: obj.right,
            top: obj.top || top,
            height: obj.height || height,
            bottom: obj.bottom || (top + (obj.height || height)),
            width: obj.width || width
        };
        return ret;
    };

// Move a StyleBox to its specified, or next best, position. The containerBox
// is the box that contains the StyleBox, such as a div. boxPositions are
// a list of other boxes that the styleBox can't overlap with.
    function moveBoxToLinePosition(window, styleBox, containerBox, boxPositions) {

        // Find the best position for a cue box, b, on the video. The axis parameter
        // is a list of axis, the order of which, it will move the box along. For example:
        // Passing ["+x", "-x"] will move the box first along the x axis in the positive
        // direction. If it doesn't find a good position for it there it will then move
        // it along the x axis in the negative direction.
        function findBestPosition(b, axis) {
            var bestPosition,
                specifiedPosition = new BoxPosition(b),
                percentage = 1; // Highest possible so the first thing we get is better.

            for (var i = 0; i < axis.length; i++) {
                while (b.overlapsOppositeAxis(containerBox, axis[i]) ||
                (b.within(containerBox) && b.overlapsAny(boxPositions))) {
                    b.move(axis[i]);
                }
                // We found a spot where we aren't overlapping anything. This is our
                // best position.
                if (b.within(containerBox)) {
                    return b;
                }
                var p = b.intersectPercentage(containerBox);
                // If we're outside the container box less then we were on our last try
                // then remember this position as the best position.
                if (percentage > p) {
                    bestPosition = new BoxPosition(b);
                    percentage = p;
                }
                // Reset the box position to the specified position.
                b = new BoxPosition(specifiedPosition);
            }
            return bestPosition || specifiedPosition;
        }

        var boxPosition = new BoxPosition(styleBox),
            cue = styleBox.cue,
            linePos = computeLinePos(cue),
            axis = [];

        // If we have a line number to align the cue to.
        if (cue.snapToLines) {
            var size;
            switch (cue.vertical) {
                case "":
                    axis = [ "+y", "-y" ];
                    size = "height";
                    break;
                case "rl":
                    axis = [ "+x", "-x" ];
                    size = "width";
                    break;
                case "lr":
                    axis = [ "-x", "+x" ];
                    size = "width";
                    break;
            }

            var step = boxPosition.lineHeight,
                position = step * Math.round(linePos),
                maxPosition = containerBox[size] + step,
                initialAxis = axis[0];

            // If the specified intial position is greater then the max position then
            // clamp the box to the amount of steps it would take for the box to
            // reach the max position.
            if (Math.abs(position) > maxPosition) {
                position = position < 0 ? -1 : 1;
                position *= Math.ceil(maxPosition / step) * step;
            }

            // If computed line position returns negative then line numbers are
            // relative to the bottom of the video instead of the top. Therefore, we
            // need to increase our initial position by the length or width of the
            // video, depending on the writing direction, and reverse our axis directions.
            if (linePos < 0) {
                position += cue.vertical === "" ? containerBox.height : containerBox.width;
                axis = axis.reverse();
            }

            // Move the box to the specified position. This may not be its best
            // position.
            boxPosition.move(initialAxis, position);

        } else {
            // If we have a percentage line value for the cue.
            var calculatedPercentage = (boxPosition.lineHeight / containerBox.height) * 100;

            switch (cue.lineAlign) {
                case "middle":
                    linePos -= (calculatedPercentage / 2);
                    break;
                case "end":
                    linePos -= calculatedPercentage;
                    break;
            }

            // Apply initial line position to the cue box.
            switch (cue.vertical) {
                case "":
                    styleBox.applyStyles({
                        top: styleBox.formatStyle(linePos, "%")
                    });
                    break;
                case "rl":
                    styleBox.applyStyles({
                        left: styleBox.formatStyle(linePos, "%")
                    });
                    break;
                case "lr":
                    styleBox.applyStyles({
                        right: styleBox.formatStyle(linePos, "%")
                    });
                    break;
            }

            axis = [ "+y", "-x", "+x", "-y" ];

            // Get the box position again after we've applied the specified positioning
            // to it.
            boxPosition = new BoxPosition(styleBox);
        }

        var bestPosition = findBestPosition(boxPosition, axis);
        styleBox.move(bestPosition.toCSSCompatValues(containerBox));
    }

    function WebVTT$1() {
        // Nothing
    }

// Helper to allow strings to be decoded instead of the default binary utf8 data.
    WebVTT$1.StringDecoder = function() {
        return {
            decode: function(data) {
                if (!data) {
                    return "";
                }
                if (typeof data !== "string") {
                    throw new Error("Error - expected string data.");
                }
                return decodeURIComponent(encodeURIComponent(data));
            }
        };
    };

    WebVTT$1.convertCueToDOMTree = function(window, cuetext) {
        if (!window || !cuetext) {
            return null;
        }
        return parseContent(window, cuetext);
    };

    var FONT_SIZE_PERCENT = 0.05;
    var FONT_STYLE = "sans-serif";
    var CUE_BACKGROUND_PADDING = "1.5%";

// Runs the processing model over the cues and regions passed to it.
// @param overlay A block level element (usually a div) that the computed cues
//                and regions will be placed into.
    WebVTT$1.processCues = function(window, cues, overlay) {
        if (!window || !cues || !overlay) {
            return null;
        }

        // Remove all previous children.
        while (overlay.firstChild) {
            overlay.removeChild(overlay.firstChild);
        }

        var paddedOverlay = window.document.createElement("div");
        paddedOverlay.style.position = "absolute";
        paddedOverlay.style.left = "0";
        paddedOverlay.style.right = "0";
        paddedOverlay.style.top = "0";
        paddedOverlay.style.bottom = "0";
        paddedOverlay.style.margin = CUE_BACKGROUND_PADDING;
        overlay.appendChild(paddedOverlay);

        // Determine if we need to compute the display states of the cues. This could
        // be the case if a cue's state has been changed since the last computation or
        // if it has not been computed yet.
        function shouldCompute(cues) {
            for (var i = 0; i < cues.length; i++) {
                if (cues[i].hasBeenReset || !cues[i].displayState) {
                    return true;
                }
            }
            return false;
        }

        // We don't need to recompute the cues' display states. Just reuse them.
        if (!shouldCompute(cues)) {
            for (var i = 0; i < cues.length; i++) {
                paddedOverlay.appendChild(cues[i].displayState);
            }
            return;
        }

        var boxPositions = [],
            containerBox = BoxPosition.getSimpleBoxPosition(paddedOverlay),
            fontSize = Math.round(containerBox.height * FONT_SIZE_PERCENT * 100) / 100;
        var styleOptions = {
            font: fontSize + "px " + FONT_STYLE
        };

        (function() {
            var styleBox, cue;

            for (var i = 0; i < cues.length; i++) {
                cue = cues[i];

                // Compute the intial position and styles of the cue div.
                styleBox = new CueStyleBox(window, cue, styleOptions);
                paddedOverlay.appendChild(styleBox.div);

                // Move the cue div to it's correct line position.
                moveBoxToLinePosition(window, styleBox, containerBox, boxPositions);

                // Remember the computed div so that we don't have to recompute it later
                // if we don't have too.
                cue.displayState = styleBox.div;

                boxPositions.push(BoxPosition.getSimpleBoxPosition(styleBox));
            }
        })();
    };

    WebVTT$1.Parser = function(window, vttjs, decoder) {
        if (!decoder) {
            decoder = vttjs;
            vttjs = {};
        }
        if (!vttjs) {
            vttjs = {};
        }

        this.window = window;
        this.vttjs = vttjs;
        this.state = "INITIAL";
        this.buffer = "";
        this.decoder = decoder || new TextDecoder("utf8");
        this.regionList = [];
    };

    WebVTT$1.Parser.prototype = {
        // If the error is a ParsingError then report it to the consumer if
        // possible. If it's not a ParsingError then throw it like normal.
        reportOrThrowError: function(e) {
            if (e instanceof ParsingError) {
                this.onparsingerror && this.onparsingerror(e);
            } else {
                throw e;
            }
        },
        parse: function (data) {
            var self = this;

            // If there is no data then we won't decode it, but will just try to parse
            // whatever is in buffer already. This may occur in circumstances, for
            // example when flush() is called.
            if (data) {
                // Try to decode the data that we received.
                self.buffer += self.decoder.decode(data, {stream: true});
            }

            function collectNextLine() {
                var buffer = self.buffer;
                var pos = 0;
                while (pos < buffer.length && buffer[pos] !== '\r' && buffer[pos] !== '\n') {
                    ++pos;
                }
                var line = buffer.substr(0, pos);
                // Advance the buffer early in case we fail below.
                if (buffer[pos] === '\r') {
                    ++pos;
                }
                if (buffer[pos] === '\n') {
                    ++pos;
                }
                self.buffer = buffer.substr(pos);
                return line;
            }

            // 3.4 WebVTT region and WebVTT region settings syntax
            function parseRegion(input) {
                var settings = new Settings();

                parseOptions(input, function (k, v) {
                    switch (k) {
                        case "id":
                            settings.set(k, v);
                            break;
                        case "width":
                            settings.percent(k, v);
                            break;
                        case "lines":
                            settings.integer(k, v);
                            break;
                        case "regionanchor":
                        case "viewportanchor":
                            var xy = v.split(',');
                            if (xy.length !== 2) {
                                break;
                            }
                            // We have to make sure both x and y parse, so use a temporary
                            // settings object here.
                            var anchor = new Settings();
                            anchor.percent("x", xy[0]);
                            anchor.percent("y", xy[1]);
                            if (!anchor.has("x") || !anchor.has("y")) {
                                break;
                            }
                            settings.set(k + "X", anchor.get("x"));
                            settings.set(k + "Y", anchor.get("y"));
                            break;
                        case "scroll":
                            settings.alt(k, v, ["up"]);
                            break;
                    }
                }, /=/, /\s/);

                // Create the region, using default values for any values that were not
                // specified.
                if (settings.has("id")) {
                    var region = new (self.vttjs.VTTRegion || self.window.VTTRegion)();
                    region.width = settings.get("width", 100);
                    region.lines = settings.get("lines", 3);
                    region.regionAnchorX = settings.get("regionanchorX", 0);
                    region.regionAnchorY = settings.get("regionanchorY", 100);
                    region.viewportAnchorX = settings.get("viewportanchorX", 0);
                    region.viewportAnchorY = settings.get("viewportanchorY", 100);
                    region.scroll = settings.get("scroll", "");
                    // Register the region.
                    self.onregion && self.onregion(region);
                    // Remember the VTTRegion for later in case we parse any VTTCues that
                    // reference it.
                    self.regionList.push({
                        id: settings.get("id"),
                        region: region
                    });
                }
            }

            // draft-pantos-http-live-streaming-20
            // https://tools.ietf.org/html/draft-pantos-http-live-streaming-20#section-3.5
            // 3.5 WebVTT
            function parseTimestampMap(input) {
                var settings = new Settings();

                parseOptions(input, function(k, v) {
                    switch(k) {
                        case "MPEGT":
                            settings.integer(k + 'S', v);
                            break;
                        case "LOCA":
                            settings.set(k + 'L', parseTimeStamp(v));
                            break;
                    }
                }, /[^\d]:/, /,/);

                self.ontimestampmap && self.ontimestampmap({
                    "MPEGTS": settings.get("MPEGTS"),
                    "LOCAL": settings.get("LOCAL")
                });
            }

            // 3.2 WebVTT metadata header syntax
            function parseHeader(input) {
                if (input.match(/X-TIMESTAMP-MAP/)) {
                    // This line contains HLS X-TIMESTAMP-MAP metadata
                    parseOptions(input, function(k, v) {
                        switch(k) {
                            case "X-TIMESTAMP-MAP":
                                parseTimestampMap(v);
                                break;
                        }
                    }, /=/);
                } else {
                    parseOptions(input, function (k, v) {
                        switch (k) {
                            case "Region":
                                // 3.3 WebVTT region metadata header syntax
                                parseRegion(v);
                                break;
                        }
                    }, /:/);
                }

            }

            // 5.1 WebVTT file parsing.
            try {
                var line;
                if (self.state === "INITIAL") {
                    // We can't start parsing until we have the first line.
                    if (!/\r\n|\n/.test(self.buffer)) {
                        return this;
                    }

                    line = collectNextLine();

                    var m = line.match(/^WEBVTT([ \t].*)?$/);
                    if (!m || !m[0]) {
                        throw new ParsingError(ParsingError.Errors.BadSignature);
                    }

                    self.state = "HEADER";
                }

                var alreadyCollectedLine = false;
                while (self.buffer) {
                    // We can't parse a line until we have the full line.
                    if (!/\r\n|\n/.test(self.buffer)) {
                        return this;
                    }

                    if (!alreadyCollectedLine) {
                        line = collectNextLine();
                    } else {
                        alreadyCollectedLine = false;
                    }

                    switch (self.state) {
                        case "HEADER":
                            // 13-18 - Allow a header (metadata) under the WEBVTT line.
                            if (/:/.test(line)) {
                                parseHeader(line);
                            } else if (!line) {
                                // An empty line terminates the header and starts the body (cues).
                                self.state = "ID";
                            }
                            continue;
                        case "NOTE":
                            // Ignore NOTE blocks.
                            if (!line) {
                                self.state = "ID";
                            }
                            continue;
                        case "ID":
                            // Check for the start of NOTE blocks.
                            if (/^NOTE($|[ \t])/.test(line)) {
                                self.state = "NOTE";
                                break;
                            }
                            // 19-29 - Allow any number of line terminators, then initialize new cue values.
                            if (!line) {
                                continue;
                            }
                            self.cue = new (self.vttjs.VTTCue || self.window.VTTCue)(0, 0, "");
                            self.state = "CUE";
                            // 30-39 - Check if self line contains an optional identifier or timing data.
                            if (line.indexOf("-->") === -1) {
                                self.cue.id = line;
                                continue;
                            }
                        // Process line as start of a cue.
                        /*falls through*/
                        case "CUE":
                            // 40 - Collect cue timings and settings.
                            try {
                                parseCue(line, self.cue, self.regionList);
                            } catch (e) {
                                self.reportOrThrowError(e);
                                // In case of an error ignore rest of the cue.
                                self.cue = null;
                                self.state = "BADCUE";
                                continue;
                            }
                            self.state = "CUETEXT";
                            continue;
                        case "CUETEXT":
                            var hasSubstring = line.indexOf("-->") !== -1;
                            // 34 - If we have an empty line then report the cue.
                            // 35 - If we have the special substring '-->' then report the cue,
                            // but do not collect the line as we need to process the current
                            // one as a new cue.
                            if (!line || hasSubstring && (alreadyCollectedLine = true)) {
                                // We are done parsing self cue.
                                self.oncue && self.oncue(self.cue);
                                self.cue = null;
                                self.state = "ID";
                                continue;
                            }
                            if (self.cue.text) {
                                self.cue.text += "\n";
                            }
                            self.cue.text += line;
                            continue;
                        case "BADCUE": // BADCUE
                            // 54-62 - Collect and discard the remaining cue.
                            if (!line) {
                                self.state = "ID";
                            }
                            continue;
                    }
                }
            } catch (e) {
                self.reportOrThrowError(e);

                // If we are currently parsing a cue, report what we have.
                if (self.state === "CUETEXT" && self.cue && self.oncue) {
                    self.oncue(self.cue);
                }
                self.cue = null;
                // Enter BADWEBVTT state if header was not parsed correctly otherwise
                // another exception occurred so enter BADCUE state.
                self.state = self.state === "INITIAL" ? "BADWEBVTT" : "BADCUE";
            }
            return this;
        },
        flush: function () {
            var self = this;
            try {
                // Finish decoding the stream.
                self.buffer += self.decoder.decode();
                // Synthesize the end of the current cue or region.
                if (self.cue || self.state === "HEADER") {
                    self.buffer += "\n\n";
                    self.parse();
                }
                // If we've flushed, parsed, and we're still on the INITIAL state then
                // that means we don't have enough of the stream to parse the first
                // line.
                if (self.state === "INITIAL") {
                    throw new ParsingError(ParsingError.Errors.BadSignature);
                }
            } catch(e) {
                self.reportOrThrowError(e);
            }
            self.onflush && self.onflush();
            return this;
        }
    };

    var vtt$1 = WebVTT$1;

    /**
     * Copyright 2013 vtt.js Contributors
     *
     * Licensed under the Apache License, Version 2.0 (the "License");
     * you may not use this file except in compliance with the License.
     * You may obtain a copy of the License at
     *
     *   http://www.apache.org/licenses/LICENSE-2.0
     *
     * Unless required by applicable law or agreed to in writing, software
     * distributed under the License is distributed on an "AS IS" BASIS,
     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     * See the License for the specific language governing permissions and
     * limitations under the License.
     */

    var autoKeyword = "auto";
    var directionSetting = {
        "": true,
        "lr": true,
        "rl": true
    };
    var alignSetting = {
        "start": true,
        "middle": true,
        "end": true,
        "left": true,
        "right": true
    };

    function findDirectionSetting(value) {
        if (typeof value !== "string") {
            return false;
        }
        var dir = directionSetting[value.toLowerCase()];
        return dir ? value.toLowerCase() : false;
    }

    function findAlignSetting(value) {
        if (typeof value !== "string") {
            return false;
        }
        var align = alignSetting[value.toLowerCase()];
        return align ? value.toLowerCase() : false;
    }

    function extend$1(obj) {
        var i = 1;
        for (; i < arguments.length; i++) {
            var cobj = arguments[i];
            for (var p in cobj) {
                obj[p] = cobj[p];
            }
        }

        return obj;
    }

    function VTTCue(startTime, endTime, text) {
        var cue = this;
        var isIE8 = (/MSIE\s8\.0/).test(navigator.userAgent);
        var baseObj = {};

        if (isIE8) {
            cue = document.createElement('custom');
        } else {
            baseObj.enumerable = true;
        }

        /**
         * Shim implementation specific properties. These properties are not in
         * the spec.
         */

        // Lets us know when the VTTCue's data has changed in such a way that we need
        // to recompute its display state. This lets us compute its display state
        // lazily.
        cue.hasBeenReset = false;

        /**
         * VTTCue and TextTrackCue properties
         * http://dev.w3.org/html5/webvtt/#vttcue-interface
         */

        var _id = "";
        var _pauseOnExit = false;
        var _startTime = startTime;
        var _endTime = endTime;
        var _text = text;
        var _region = null;
        var _vertical = "";
        var _snapToLines = true;
        var _line = "auto";
        var _lineAlign = "start";
        var _position = 50;
        var _positionAlign = "middle";
        var _size = 50;
        var _align = "middle";

        Object.defineProperty(cue,
            "id", extend$1({}, baseObj, {
                get: function() {
                    return _id;
                },
                set: function(value) {
                    _id = "" + value;
                }
            }));

        Object.defineProperty(cue,
            "pauseOnExit", extend$1({}, baseObj, {
                get: function() {
                    return _pauseOnExit;
                },
                set: function(value) {
                    _pauseOnExit = !!value;
                }
            }));

        Object.defineProperty(cue,
            "startTime", extend$1({}, baseObj, {
                get: function() {
                    return _startTime;
                },
                set: function(value) {
                    if (typeof value !== "number") {
                        throw new TypeError("Start time must be set to a number.");
                    }
                    _startTime = value;
                    this.hasBeenReset = true;
                }
            }));

        Object.defineProperty(cue,
            "endTime", extend$1({}, baseObj, {
                get: function() {
                    return _endTime;
                },
                set: function(value) {
                    if (typeof value !== "number") {
                        throw new TypeError("End time must be set to a number.");
                    }
                    _endTime = value;
                    this.hasBeenReset = true;
                }
            }));

        Object.defineProperty(cue,
            "text", extend$1({}, baseObj, {
                get: function() {
                    return _text;
                },
                set: function(value) {
                    _text = "" + value;
                    this.hasBeenReset = true;
                }
            }));

        Object.defineProperty(cue,
            "region", extend$1({}, baseObj, {
                get: function() {
                    return _region;
                },
                set: function(value) {
                    _region = value;
                    this.hasBeenReset = true;
                }
            }));

        Object.defineProperty(cue,
            "vertical", extend$1({}, baseObj, {
                get: function() {
                    return _vertical;
                },
                set: function(value) {
                    var setting = findDirectionSetting(value);
                    // Have to check for false because the setting an be an empty string.
                    if (setting === false) {
                        throw new SyntaxError("An invalid or illegal string was specified.");
                    }
                    _vertical = setting;
                    this.hasBeenReset = true;
                }
            }));

        Object.defineProperty(cue,
            "snapToLines", extend$1({}, baseObj, {
                get: function() {
                    return _snapToLines;
                },
                set: function(value) {
                    _snapToLines = !!value;
                    this.hasBeenReset = true;
                }
            }));

        Object.defineProperty(cue,
            "line", extend$1({}, baseObj, {
                get: function() {
                    return _line;
                },
                set: function(value) {
                    if (typeof value !== "number" && value !== autoKeyword) {
                        throw new SyntaxError("An invalid number or illegal string was specified.");
                    }
                    _line = value;
                    this.hasBeenReset = true;
                }
            }));

        Object.defineProperty(cue,
            "lineAlign", extend$1({}, baseObj, {
                get: function() {
                    return _lineAlign;
                },
                set: function(value) {
                    var setting = findAlignSetting(value);
                    if (!setting) {
                        throw new SyntaxError("An invalid or illegal string was specified.");
                    }
                    _lineAlign = setting;
                    this.hasBeenReset = true;
                }
            }));

        Object.defineProperty(cue,
            "position", extend$1({}, baseObj, {
                get: function() {
                    return _position;
                },
                set: function(value) {
                    if (value < 0 || value > 100) {
                        throw new Error("Position must be between 0 and 100.");
                    }
                    _position = value;
                    this.hasBeenReset = true;
                }
            }));

        Object.defineProperty(cue,
            "positionAlign", extend$1({}, baseObj, {
                get: function() {
                    return _positionAlign;
                },
                set: function(value) {
                    var setting = findAlignSetting(value);
                    if (!setting) {
                        throw new SyntaxError("An invalid or illegal string was specified.");
                    }
                    _positionAlign = setting;
                    this.hasBeenReset = true;
                }
            }));

        Object.defineProperty(cue,
            "size", extend$1({}, baseObj, {
                get: function() {
                    return _size;
                },
                set: function(value) {
                    if (value < 0 || value > 100) {
                        throw new Error("Size must be between 0 and 100.");
                    }
                    _size = value;
                    this.hasBeenReset = true;
                }
            }));

        Object.defineProperty(cue,
            "align", extend$1({}, baseObj, {
                get: function() {
                    return _align;
                },
                set: function(value) {
                    var setting = findAlignSetting(value);
                    if (!setting) {
                        throw new SyntaxError("An invalid or illegal string was specified.");
                    }
                    _align = setting;
                    this.hasBeenReset = true;
                }
            }));

        /**
         * Other <track> spec defined properties
         */

        // http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#text-track-cue-display-state
        cue.displayState = undefined;

        if (isIE8) {
            return cue;
        }
    }

    /**
     * VTTCue methods
     */

    VTTCue.prototype.getCueAsHTML = function() {
        // Assume WebVTT.convertCueToDOMTree is on the global.
        return WebVTT.convertCueToDOMTree(window, this.text);
    };

    var vttcue = VTTCue;

    /**
     * Copyright 2013 vtt.js Contributors
     *
     * Licensed under the Apache License, Version 2.0 (the "License");
     * you may not use this file except in compliance with the License.
     * You may obtain a copy of the License at
     *
     *   http://www.apache.org/licenses/LICENSE-2.0
     *
     * Unless required by applicable law or agreed to in writing, software
     * distributed under the License is distributed on an "AS IS" BASIS,
     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     * See the License for the specific language governing permissions and
     * limitations under the License.
     */

    var scrollSetting = {
        "": true,
        "up": true
    };

    function findScrollSetting(value) {
        if (typeof value !== "string") {
            return false;
        }
        var scroll = scrollSetting[value.toLowerCase()];
        return scroll ? value.toLowerCase() : false;
    }

    function isValidPercentValue(value) {
        return typeof value === "number" && (value >= 0 && value <= 100);
    }

// VTTRegion shim http://dev.w3.org/html5/webvtt/#vttregion-interface
    function VTTRegion() {
        var _width = 100;
        var _lines = 3;
        var _regionAnchorX = 0;
        var _regionAnchorY = 100;
        var _viewportAnchorX = 0;
        var _viewportAnchorY = 100;
        var _scroll = "";

        Object.defineProperties(this, {
            "width": {
                enumerable: true,
                get: function() {
                    return _width;
                },
                set: function(value) {
                    if (!isValidPercentValue(value)) {
                        throw new Error("Width must be between 0 and 100.");
                    }
                    _width = value;
                }
            },
            "lines": {
                enumerable: true,
                get: function() {
                    return _lines;
                },
                set: function(value) {
                    if (typeof value !== "number") {
                        throw new TypeError("Lines must be set to a number.");
                    }
                    _lines = value;
                }
            },
            "regionAnchorY": {
                enumerable: true,
                get: function() {
                    return _regionAnchorY;
                },
                set: function(value) {
                    if (!isValidPercentValue(value)) {
                        throw new Error("RegionAnchorX must be between 0 and 100.");
                    }
                    _regionAnchorY = value;
                }
            },
            "regionAnchorX": {
                enumerable: true,
                get: function() {
                    return _regionAnchorX;
                },
                set: function(value) {
                    if(!isValidPercentValue(value)) {
                        throw new Error("RegionAnchorY must be between 0 and 100.");
                    }
                    _regionAnchorX = value;
                }
            },
            "viewportAnchorY": {
                enumerable: true,
                get: function() {
                    return _viewportAnchorY;
                },
                set: function(value) {
                    if (!isValidPercentValue(value)) {
                        throw new Error("ViewportAnchorY must be between 0 and 100.");
                    }
                    _viewportAnchorY = value;
                }
            },
            "viewportAnchorX": {
                enumerable: true,
                get: function() {
                    return _viewportAnchorX;
                },
                set: function(value) {
                    if (!isValidPercentValue(value)) {
                        throw new Error("ViewportAnchorX must be between 0 and 100.");
                    }
                    _viewportAnchorX = value;
                }
            },
            "scroll": {
                enumerable: true,
                get: function() {
                    return _scroll;
                },
                set: function(value) {
                    var setting = findScrollSetting(value);
                    // Have to check for false as an empty string is a legal value.
                    if (setting === false) {
                        throw new SyntaxError("An invalid or illegal string was specified.");
                    }
                    _scroll = setting;
                }
            }
        });
    }

    var vttregion = VTTRegion;

    var browserIndex = createCommonjsModule(function (module) {
        /**
         * Copyright 2013 vtt.js Contributors
         *
         * Licensed under the Apache License, Version 2.0 (the "License");
         * you may not use this file except in compliance with the License.
         * You may obtain a copy of the License at
         *
         *   http://www.apache.org/licenses/LICENSE-2.0
         *
         * Unless required by applicable law or agreed to in writing, software
         * distributed under the License is distributed on an "AS IS" BASIS,
         * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
         * See the License for the specific language governing permissions and
         * limitations under the License.
         */

// Default exports for Node. Export the extended versions of VTTCue and
// VTTRegion in Node since we likely want the capability to convert back and
// forth between JSON. If we don't then it's not that big of a deal since we're
// off browser.



        var vttjs = module.exports = {
            WebVTT: vtt$1,
            VTTCue: vttcue,
            VTTRegion: vttregion
        };

        window_1.vttjs = vttjs;
        window_1.WebVTT = vttjs.WebVTT;

        var cueShim = vttjs.VTTCue;
        var regionShim = vttjs.VTTRegion;
        var nativeVTTCue = window_1.VTTCue;
        var nativeVTTRegion = window_1.VTTRegion;

        vttjs.shim = function() {
            window_1.VTTCue = cueShim;
            window_1.VTTRegion = regionShim;
        };

        vttjs.restore = function() {
            window_1.VTTCue = nativeVTTCue;
            window_1.VTTRegion = nativeVTTRegion;
        };

        if (!window_1.VTTCue) {
            vttjs.shim();
        }
    });

    /**
     * @file tech.js
     */

    /**
     * An Object containing a structure like: `{src: 'url', type: 'mimetype'}` or string
     * that just contains the src url alone.
     * * `var SourceObject = {src: 'http://ex.com/video.mp4', type: 'video/mp4'};`
     * `var SourceString = 'http://example.com/some-video.mp4';`
     *
     * @typedef {Object|string} Tech~SourceObject
     *
     * @property {string} src
     *           The url to the source
     *
     * @property {string} type
     *           The mime type of the source
     */

    /**
     * A function used by {@link Tech} to create a new {@link TextTrack}.
     *
     * @private
     *
     * @param {Tech} self
     *        An instance of the Tech class.
     *
     * @param {string} kind
     *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)
     *
     * @param {string} [label]
     *        Label to identify the text track
     *
     * @param {string} [language]
     *        Two letter language abbreviation
     *
     * @param {Object} [options={}]
     *        An object with additional text track options
     *
     * @return {TextTrack}
     *          The text track that was created.
     */
    function createTrackHelper(self, kind, label, language) {
        var options = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : {};

        var tracks = self.textTracks();

        options.kind = kind;

        if (label) {
            options.label = label;
        }
        if (language) {
            options.language = language;
        }
        options.tech = self;

        var track = new ALL.text.TrackClass(options);

        tracks.addTrack(track);

        return track;
    }

    /**
     * This is the base class for media playback technology controllers, such as
     * {@link Flash} and {@link HTML5}
     *
     * @extends Component
     */

    var Tech = function (_Component) {
        inherits(Tech, _Component);

        /**
         * Create an instance of this Tech.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         *
         * @param {Component~ReadyCallback} ready
         *        Callback function to call when the `HTML5` Tech is ready.
         */
        function Tech() {
            var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
            var ready = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : function () {};
            classCallCheck(this, Tech);

            // we don't want the tech to report user activity automatically.
            // This is done manually in addControlsListeners
            options.reportTouchActivity = false;

            // keep track of whether the current source has played at all to
            // implement a very limited played()
            var _this = possibleConstructorReturn(this, _Component.call(this, null, options, ready));

            _this.hasStarted_ = false;
            _this.on('playing', function () {
                this.hasStarted_ = true;
            });
            _this.on('loadstart', function () {
                this.hasStarted_ = false;
            });

            ALL.names.forEach(function (name) {
                var props = ALL[name];

                if (options && options[props.getterName]) {
                    _this[props.privateName] = options[props.getterName];
                }
            });

            // Manually track progress in cases where the browser/flash player doesn't report it.
            if (!_this.featuresProgressEvents) {
                _this.manualProgressOn();
            }

            // Manually track timeupdates in cases where the browser/flash player doesn't report it.
            if (!_this.featuresTimeupdateEvents) {
                _this.manualTimeUpdatesOn();
            }

            ['Text', 'Audio', 'Video'].forEach(function (track) {
                if (options['native' + track + 'Tracks'] === false) {
                    _this['featuresNative' + track + 'Tracks'] = false;
                }
            });

            if (options.nativeCaptions === false || options.nativeTextTracks === false) {
                _this.featuresNativeTextTracks = false;
            } else if (options.nativeCaptions === true || options.nativeTextTracks === true) {
                _this.featuresNativeTextTracks = true;
            }

            if (!_this.featuresNativeTextTracks) {
                _this.emulateTextTracks();
            }

            _this.autoRemoteTextTracks_ = new ALL.text.ListClass();

            _this.initTrackListeners();

            // Turn on component tap events only if not using native controls
            if (!options.nativeControlsForTouch) {
                _this.emitTapEvents();
            }

            if (_this.constructor) {
                _this.name_ = _this.constructor.name || 'Unknown Tech';
            }
            return _this;
        }

        /* Fallbacks for unsupported event types
         ================================================================================ */

        /**
         * Polyfill the `progress` event for browsers that don't support it natively.
         *
         * @see {@link Tech#trackProgress}
         */


        Tech.prototype.manualProgressOn = function manualProgressOn() {
            this.on('durationchange', this.onDurationChange);

            this.manualProgress = true;

            // Trigger progress watching when a source begins loading
            this.one('ready', this.trackProgress);
        };

        /**
         * Turn off the polyfill for `progress` events that was created in
         * {@link Tech#manualProgressOn}
         */


        Tech.prototype.manualProgressOff = function manualProgressOff() {
            this.manualProgress = false;
            this.stopTrackingProgress();

            this.off('durationchange', this.onDurationChange);
        };

        /**
         * This is used to trigger a `progress` event when the buffered percent changes. It
         * sets an interval function that will be called every 500 milliseconds to check if the
         * buffer end percent has changed.
         *
         * > This function is called by {@link Tech#manualProgressOn}
         *
         * @param {EventTarget~Event} event
         *        The `ready` event that caused this to run.
         *
         * @listens Tech#ready
         * @fires Tech#progress
         */


        Tech.prototype.trackProgress = function trackProgress(event) {
            this.stopTrackingProgress();
            this.progressInterval = this.setInterval(bind(this, function () {
                // Don't trigger unless buffered amount is greater than last time

                var numBufferedPercent = this.bufferedPercent();

                if (this.bufferedPercent_ !== numBufferedPercent) {
                    /**
                     * See {@link Player#progress}
                     *
                     * @event Tech#progress
                     * @type {EventTarget~Event}
                     */
                    this.trigger('progress');
                }

                this.bufferedPercent_ = numBufferedPercent;

                if (numBufferedPercent === 1) {
                    this.stopTrackingProgress();
                }
            }), 500);
        };

        /**
         * Update our internal duration on a `durationchange` event by calling
         * {@link Tech#duration}.
         *
         * @param {EventTarget~Event} event
         *        The `durationchange` event that caused this to run.
         *
         * @listens Tech#durationchange
         */


        Tech.prototype.onDurationChange = function onDurationChange(event) {
            this.duration_ = this.duration();
        };

        /**
         * Get and create a `TimeRange` object for buffering.
         *
         * @return {TimeRange}
         *         The time range object that was created.
         */


        Tech.prototype.buffered = function buffered() {
            return createTimeRanges(0, 0);
        };

        /**
         * Get the percentage of the current video that is currently buffered.
         *
         * @return {number}
         *         A number from 0 to 1 that represents the decimal percentage of the
         *         video that is buffered.
         *
         */


        Tech.prototype.bufferedPercent = function bufferedPercent$$1() {
            return bufferedPercent(this.buffered(), this.duration_);
        };

        /**
         * Turn off the polyfill for `progress` events that was created in
         * {@link Tech#manualProgressOn}
         * Stop manually tracking progress events by clearing the interval that was set in
         * {@link Tech#trackProgress}.
         */


        Tech.prototype.stopTrackingProgress = function stopTrackingProgress() {
            this.clearInterval(this.progressInterval);
        };

        /**
         * Polyfill the `timeupdate` event for browsers that don't support it.
         *
         * @see {@link Tech#trackCurrentTime}
         */


        Tech.prototype.manualTimeUpdatesOn = function manualTimeUpdatesOn() {
            this.manualTimeUpdates = true;

            this.on('play', this.trackCurrentTime);
            this.on('pause', this.stopTrackingCurrentTime);
        };

        /**
         * Turn off the polyfill for `timeupdate` events that was created in
         * {@link Tech#manualTimeUpdatesOn}
         */


        Tech.prototype.manualTimeUpdatesOff = function manualTimeUpdatesOff() {
            this.manualTimeUpdates = false;
            this.stopTrackingCurrentTime();
            this.off('play', this.trackCurrentTime);
            this.off('pause', this.stopTrackingCurrentTime);
        };

        /**
         * Sets up an interval function to track current time and trigger `timeupdate` every
         * 250 milliseconds.
         *
         * @listens Tech#play
         * @triggers Tech#timeupdate
         */


        Tech.prototype.trackCurrentTime = function trackCurrentTime() {
            if (this.currentTimeInterval) {
                this.stopTrackingCurrentTime();
            }
            this.currentTimeInterval = this.setInterval(function () {
                /**
                 * Triggered at an interval of 250ms to indicated that time is passing in the video.
                 *
                 * @event Tech#timeupdate
                 * @type {EventTarget~Event}
                 */
                this.trigger({ type: 'timeupdate', target: this, manuallyTriggered: true });

                // 42 = 24 fps // 250 is what Webkit uses // FF uses 15
            }, 250);
        };

        /**
         * Stop the interval function created in {@link Tech#trackCurrentTime} so that the
         * `timeupdate` event is no longer triggered.
         *
         * @listens {Tech#pause}
         */


        Tech.prototype.stopTrackingCurrentTime = function stopTrackingCurrentTime() {
            this.clearInterval(this.currentTimeInterval);

            // #1002 - if the video ends right before the next timeupdate would happen,
            // the progress bar won't make it all the way to the end
            this.trigger({ type: 'timeupdate', target: this, manuallyTriggered: true });
        };

        /**
         * Turn off all event polyfills, clear the `Tech`s {@link AudioTrackList},
         * {@link VideoTrackList}, and {@link TextTrackList}, and dispose of this Tech.
         *
         * @fires Component#dispose
         */


        Tech.prototype.dispose = function dispose() {

            // clear out all tracks because we can't reuse them between techs
            this.clearTracks(NORMAL.names);

            // Turn off any manual progress or timeupdate tracking
            if (this.manualProgress) {
                this.manualProgressOff();
            }

            if (this.manualTimeUpdates) {
                this.manualTimeUpdatesOff();
            }

            _Component.prototype.dispose.call(this);
        };

        /**
         * Clear out a single `TrackList` or an array of `TrackLists` given their names.
         *
         * > Note: Techs without source handlers should call this between sources for `video`
         *         & `audio` tracks. You don't want to use them between tracks!
         *
         * @param {string[]|string} types
         *        TrackList names to clear, valid names are `video`, `audio`, and
         *        `text`.
         */


        Tech.prototype.clearTracks = function clearTracks(types) {
            var _this2 = this;

            types = [].concat(types);
            // clear out all tracks because we can't reuse them between techs
            types.forEach(function (type) {
                var list = _this2[type + 'Tracks']() || [];
                var i = list.length;

                while (i--) {
                    var track = list[i];

                    if (type === 'text') {
                        _this2.removeRemoteTextTrack(track);
                    }
                    list.removeTrack(track);
                }
            });
        };

        /**
         * Remove any TextTracks added via addRemoteTextTrack that are
         * flagged for automatic garbage collection
         */


        Tech.prototype.cleanupAutoTextTracks = function cleanupAutoTextTracks() {
            var list = this.autoRemoteTextTracks_ || [];
            var i = list.length;

            while (i--) {
                var track = list[i];

                this.removeRemoteTextTrack(track);
            }
        };

        /**
         * Reset the tech, which will removes all sources and reset the internal readyState.
         *
         * @abstract
         */


        Tech.prototype.reset = function reset() {};

        /**
         * Get or set an error on the Tech.
         *
         * @param {MediaError} [err]
         *        Error to set on the Tech
         *
         * @return {MediaError|null}
         *         The current error object on the tech, or null if there isn't one.
         */


        Tech.prototype.error = function error(err) {
            if (err !== undefined) {
                this.error_ = new MediaError(err);
                this.trigger('error');
            }
            return this.error_;
        };

        /**
         * Returns the `TimeRange`s that have been played through for the current source.
         *
         * > NOTE: This implementation is incomplete. It does not track the played `TimeRange`.
         *         It only checks wether the source has played at all or not.
         *
         * @return {TimeRange}
         *         - A single time range if this video has played
         *         - An empty set of ranges if not.
         */


        Tech.prototype.played = function played() {
            if (this.hasStarted_) {
                return createTimeRanges(0, 0);
            }
            return createTimeRanges();
        };

        /**
         * Causes a manual time update to occur if {@link Tech#manualTimeUpdatesOn} was
         * previously called.
         *
         * @fires Tech#timeupdate
         */


        Tech.prototype.setCurrentTime = function setCurrentTime() {
            // improve the accuracy of manual timeupdates
            if (this.manualTimeUpdates) {
                /**
                 * A manual `timeupdate` event.
                 *
                 * @event Tech#timeupdate
                 * @type {EventTarget~Event}
                 */
                this.trigger({ type: 'timeupdate', target: this, manuallyTriggered: true });
            }
        };

        /**
         * Turn on listeners for {@link VideoTrackList}, {@link {AudioTrackList}, and
         * {@link TextTrackList} events.
         *
         * This adds {@link EventTarget~EventListeners} for `addtrack`, and  `removetrack`.
         *
         * @fires Tech#audiotrackchange
         * @fires Tech#videotrackchange
         * @fires Tech#texttrackchange
         */


        Tech.prototype.initTrackListeners = function initTrackListeners() {
            var _this3 = this;

            /**
             * Triggered when tracks are added or removed on the Tech {@link AudioTrackList}
             *
             * @event Tech#audiotrackchange
             * @type {EventTarget~Event}
             */

            /**
             * Triggered when tracks are added or removed on the Tech {@link VideoTrackList}
             *
             * @event Tech#videotrackchange
             * @type {EventTarget~Event}
             */

            /**
             * Triggered when tracks are added or removed on the Tech {@link TextTrackList}
             *
             * @event Tech#texttrackchange
             * @type {EventTarget~Event}
             */
            NORMAL.names.forEach(function (name) {
                var props = NORMAL[name];
                var trackListChanges = function trackListChanges() {
                    _this3.trigger(name + 'trackchange');
                };

                var tracks = _this3[props.getterName]();

                tracks.addEventListener('removetrack', trackListChanges);
                tracks.addEventListener('addtrack', trackListChanges);

                _this3.on('dispose', function () {
                    tracks.removeEventListener('removetrack', trackListChanges);
                    tracks.removeEventListener('addtrack', trackListChanges);
                });
            });
        };

        /**
         * Emulate TextTracks using vtt.js if necessary
         *
         * @fires Tech#vttjsloaded
         * @fires Tech#vttjserror
         */


        Tech.prototype.addWebVttScript_ = function addWebVttScript_() {
            var _this4 = this;

            if (window_1.WebVTT) {
                return;
            }

            // Initially, Tech.el_ is a child of a dummy-div wait until the Component system
            // signals that the Tech is ready at which point Tech.el_ is part of the DOM
            // before inserting the WebVTT script
            if (document_1.body.contains(this.el())) {

                // load via require if available and vtt.js script location was not passed in
                // as an option. novtt builds will turn the above require call into an empty object
                // which will cause this if check to always fail.
                if (!this.options_['vtt.js'] && isPlain(browserIndex) && Object.keys(browserIndex).length > 0) {
                    this.trigger('vttjsloaded');
                    return;
                }

                // load vtt.js via the script location option or the cdn of no location was
                // passed in
                var script = document_1.createElement('script');

                script.src = this.options_['vtt.js'] || 'https://vjs.zencdn.net/vttjs/0.12.4/vtt.min.js';
                script.onload = function () {
                    /**
                     * Fired when vtt.js is loaded.
                     *
                     * @event Tech#vttjsloaded
                     * @type {EventTarget~Event}
                     */
                    _this4.trigger('vttjsloaded');
                };
                script.onerror = function () {
                    /**
                     * Fired when vtt.js was not loaded due to an error
                     *
                     * @event Tech#vttjsloaded
                     * @type {EventTarget~Event}
                     */
                    _this4.trigger('vttjserror');
                };
                this.on('dispose', function () {
                    script.onload = null;
                    script.onerror = null;
                });
                // but have not loaded yet and we set it to true before the inject so that
                // we don't overwrite the injected window.WebVTT if it loads right away
                window_1.WebVTT = true;
                this.el().parentNode.appendChild(script);
            } else {
                this.ready(this.addWebVttScript_);
            }
        };

        /**
         * Emulate texttracks
         *
         */


        Tech.prototype.emulateTextTracks = function emulateTextTracks() {
            var _this5 = this;

            var tracks = this.textTracks();
            var remoteTracks = this.remoteTextTracks();
            var handleAddTrack = function handleAddTrack(e) {
                return tracks.addTrack(e.track);
            };
            var handleRemoveTrack = function handleRemoveTrack(e) {
                return tracks.removeTrack(e.track);
            };

            remoteTracks.on('addtrack', handleAddTrack);
            remoteTracks.on('removetrack', handleRemoveTrack);

            this.addWebVttScript_();

            var updateDisplay = function updateDisplay() {
                return _this5.trigger('texttrackchange');
            };

            var textTracksChanges = function textTracksChanges() {
                updateDisplay();

                for (var i = 0; i < tracks.length; i++) {
                    var track = tracks[i];

                    track.removeEventListener('cuechange', updateDisplay);
                    if (track.mode === 'showing') {
                        track.addEventListener('cuechange', updateDisplay);
                    }
                }
            };

            textTracksChanges();
            tracks.addEventListener('change', textTracksChanges);
            tracks.addEventListener('addtrack', textTracksChanges);
            tracks.addEventListener('removetrack', textTracksChanges);

            this.on('dispose', function () {
                remoteTracks.off('addtrack', handleAddTrack);
                remoteTracks.off('removetrack', handleRemoveTrack);
                tracks.removeEventListener('change', textTracksChanges);
                tracks.removeEventListener('addtrack', textTracksChanges);
                tracks.removeEventListener('removetrack', textTracksChanges);

                for (var i = 0; i < tracks.length; i++) {
                    var track = tracks[i];

                    track.removeEventListener('cuechange', updateDisplay);
                }
            });
        };

        /**
         * Create and returns a remote {@link TextTrack} object.
         *
         * @param {string} kind
         *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)
         *
         * @param {string} [label]
         *        Label to identify the text track
         *
         * @param {string} [language]
         *        Two letter language abbreviation
         *
         * @return {TextTrack}
         *         The TextTrack that gets created.
         */


        Tech.prototype.addTextTrack = function addTextTrack(kind, label, language) {
            if (!kind) {
                throw new Error('TextTrack kind is required but was not provided');
            }

            return createTrackHelper(this, kind, label, language);
        };

        /**
         * Create an emulated TextTrack for use by addRemoteTextTrack
         *
         * This is intended to be overridden by classes that inherit from
         * Tech in order to create native or custom TextTracks.
         *
         * @param {Object} options
         *        The object should contain the options to initialize the TextTrack with.
         *
         * @param {string} [options.kind]
         *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata).
         *
         * @param {string} [options.label].
         *        Label to identify the text track
         *
         * @param {string} [options.language]
         *        Two letter language abbreviation.
         *
         * @return {HTMLTrackElement}
         *         The track element that gets created.
         */


        Tech.prototype.createRemoteTextTrack = function createRemoteTextTrack(options) {
            var track = mergeOptions(options, {
                tech: this
            });

            return new REMOTE.remoteTextEl.TrackClass(track);
        };

        /**
         * Creates a remote text track object and returns an html track element.
         *
         * > Note: This can be an emulated {@link HTMLTrackElement} or a native one.
         *
         * @param {Object} options
         *        See {@link Tech#createRemoteTextTrack} for more detailed properties.
         *
         * @param {boolean} [manualCleanup=true]
         *        - When false: the TextTrack will be automatically removed from the video
         *          element whenever the source changes
         *        - When True: The TextTrack will have to be cleaned up manually
         *
         * @return {HTMLTrackElement}
         *         An Html Track Element.
         *
         * @deprecated The default functionality for this function will be equivalent
         *             to "manualCleanup=false" in the future. The manualCleanup parameter will
         *             also be removed.
         */


        Tech.prototype.addRemoteTextTrack = function addRemoteTextTrack() {
            var _this6 = this;

            var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
            var manualCleanup = arguments[1];

            var htmlTrackElement = this.createRemoteTextTrack(options);

            if (manualCleanup !== true && manualCleanup !== false) {
                // deprecation warning
                log$1.warn('Calling addRemoteTextTrack without explicitly setting the "manualCleanup" parameter to `true` is deprecated and default to `false` in future version of video.js');
                manualCleanup = true;
            }

            // store HTMLTrackElement and TextTrack to remote list
            this.remoteTextTrackEls().addTrackElement_(htmlTrackElement);
            this.remoteTextTracks().addTrack(htmlTrackElement.track);

            if (manualCleanup !== true) {
                // create the TextTrackList if it doesn't exist
                this.ready(function () {
                    return _this6.autoRemoteTextTracks_.addTrack(htmlTrackElement.track);
                });
            }

            return htmlTrackElement;
        };

        /**
         * Remove a remote text track from the remote `TextTrackList`.
         *
         * @param {TextTrack} track
         *        `TextTrack` to remove from the `TextTrackList`
         */


        Tech.prototype.removeRemoteTextTrack = function removeRemoteTextTrack(track) {
            var trackElement = this.remoteTextTrackEls().getTrackElementByTrack_(track);

            // remove HTMLTrackElement and TextTrack from remote list
            this.remoteTextTrackEls().removeTrackElement_(trackElement);
            this.remoteTextTracks().removeTrack(track);
            this.autoRemoteTextTracks_.removeTrack(track);
        };

        /**
         * Gets available media playback quality metrics as specified by the W3C's Media
         * Playback Quality API.
         *
         * @see [Spec]{@link https://wicg.github.io/media-playback-quality}
         *
         * @return {Object}
         *         An object with supported media playback quality metrics
         *
         * @abstract
         */


        Tech.prototype.getVideoPlaybackQuality = function getVideoPlaybackQuality() {
            return {};
        };

        /**
         * A method to set a poster from a `Tech`.
         *
         * @abstract
         */


        Tech.prototype.setPoster = function setPoster() {};

        /**
         * A method to check for the presence of the 'playsinine' <video> attribute.
         *
         * @abstract
         */


        Tech.prototype.playsinline = function playsinline() {};

        /**
         * A method to set or unset the 'playsinine' <video> attribute.
         *
         * @abstract
         */


        Tech.prototype.setPlaysinline = function setPlaysinline() {};

        /*
         * Check if the tech can support the given mime-type.
         *
         * The base tech does not support any type, but source handlers might
         * overwrite this.
         *
         * @param  {string} type
         *         The mimetype to check for support
         *
         * @return {string}
         *         'probably', 'maybe', or empty string
         *
         * @see [Spec]{@link https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/canPlayType}
         *
         * @abstract
         */


        Tech.prototype.canPlayType = function canPlayType() {
            return '';
        };

        /**
         * Check if the type is supported by this tech.
         *
         * The base tech does not support any type, but source handlers might
         * overwrite this.
         *
         * @param {string} type
         *        The media type to check
         * @return {string} Returns the native video element's response
         */


        Tech.canPlayType = function canPlayType() {
            return '';
        };

        /**
         * Check if the tech can support the given source
         * @param {Object} srcObj
         *        The source object
         * @param {Object} options
         *        The options passed to the tech
         * @return {string} 'probably', 'maybe', or '' (empty string)
         */


        Tech.canPlaySource = function canPlaySource(srcObj, options) {
            return Tech.canPlayType(srcObj.type);
        };

        /*
         * Return whether the argument is a Tech or not.
         * Can be passed either a Class like `Html5` or a instance like `player.tech_`
         *
         * @param {Object} component
         *        The item to check
         *
         * @return {boolean}
         *         Whether it is a tech or not
         *         - True if it is a tech
         *         - False if it is not
         */


        Tech.isTech = function isTech(component) {
            return component.prototype instanceof Tech || component instanceof Tech || component === Tech;
        };

        /**
         * Registers a `Tech` into a shared list for videojs.
         *
         * @param {string} name
         *        Name of the `Tech` to register.
         *
         * @param {Object} tech
         *        The `Tech` class to register.
         */


        Tech.registerTech = function registerTech(name, tech) {
            if (!Tech.techs_) {
                Tech.techs_ = {};
            }

            if (!Tech.isTech(tech)) {
                throw new Error('Tech ' + name + ' must be a Tech');
            }

            if (!Tech.canPlayType) {
                throw new Error('Techs must have a static canPlayType method on them');
            }
            if (!Tech.canPlaySource) {
                throw new Error('Techs must have a static canPlaySource method on them');
            }

            name = toTitleCase(name);

            Tech.techs_[name] = tech;
            if (name !== 'Tech') {
                // camel case the techName for use in techOrder
                Tech.defaultTechOrder_.push(name);
            }
            return tech;
        };

        /**
         * Get a `Tech` from the shared list by name.
         *
         * @param {string} name
         *        `camelCase` or `TitleCase` name of the Tech to get
         *
         * @return {Tech|undefined}
         *         The `Tech` or undefined if there was no tech with the name requsted.
         */


        Tech.getTech = function getTech(name) {
            if (!name) {
                return;
            }

            name = toTitleCase(name);

            if (Tech.techs_ && Tech.techs_[name]) {
                return Tech.techs_[name];
            }

            if (window_1 && window_1.videojs && window_1.videojs[name]) {
                log$1.warn('The ' + name + ' tech was added to the videojs object when it should be registered using videojs.registerTech(name, tech)');
                return window_1.videojs[name];
            }
        };

        return Tech;
    }(Component);

    /**
     * Get the {@link VideoTrackList}
     *
     * @returns {VideoTrackList}
     * @method Tech.prototype.videoTracks
     */

    /**
     * Get the {@link AudioTrackList}
     *
     * @returns {AudioTrackList}
     * @method Tech.prototype.audioTracks
     */

    /**
     * Get the {@link TextTrackList}
     *
     * @returns {TextTrackList}
     * @method Tech.prototype.textTracks
     */

    /**
     * Get the remote element {@link TextTrackList}
     *
     * @returns {TextTrackList}
     * @method Tech.prototype.remoteTextTracks
     */

    /**
     * Get the remote element {@link HtmlTrackElementList}
     *
     * @returns {HtmlTrackElementList}
     * @method Tech.prototype.remoteTextTrackEls
     */

    ALL.names.forEach(function (name) {
        var props = ALL[name];

        Tech.prototype[props.getterName] = function () {
            this[props.privateName] = this[props.privateName] || new props.ListClass();
            return this[props.privateName];
        };
    });

    /**
     * List of associated text tracks
     *
     * @type {TextTrackList}
     * @private
     * @property Tech#textTracks_
     */

    /**
     * List of associated audio tracks.
     *
     * @type {AudioTrackList}
     * @private
     * @property Tech#audioTracks_
     */

    /**
     * List of associated video tracks.
     *
     * @type {VideoTrackList}
     * @private
     * @property Tech#videoTracks_
     */

    /**
     * Boolean indicating wether the `Tech` supports volume control.
     *
     * @type {boolean}
     * @default
     */
    Tech.prototype.featuresVolumeControl = true;

    /**
     * Boolean indicating wether the `Tech` support fullscreen resize control.
     * Resizing plugins using request fullscreen reloads the plugin
     *
     * @type {boolean}
     * @default
     */
    Tech.prototype.featuresFullscreenResize = false;

    /**
     * Boolean indicating wether the `Tech` supports changing the speed at which the video
     * plays. Examples:
     *   - Set player to play 2x (twice) as fast
     *   - Set player to play 0.5x (half) as fast
     *
     * @type {boolean}
     * @default
     */
    Tech.prototype.featuresPlaybackRate = false;

    /**
     * Boolean indicating wether the `Tech` supports the `progress` event. This is currently
     * not triggered by video-js-swf. This will be used to determine if
     * {@link Tech#manualProgressOn} should be called.
     *
     * @type {boolean}
     * @default
     */
    Tech.prototype.featuresProgressEvents = false;

    /**
     * Boolean indicating wether the `Tech` supports the `timeupdate` event. This is currently
     * not triggered by video-js-swf. This will be used to determine if
     * {@link Tech#manualTimeUpdates} should be called.
     *
     * @type {boolean}
     * @default
     */
    Tech.prototype.featuresTimeupdateEvents = false;

    /**
     * Boolean indicating wether the `Tech` supports the native `TextTrack`s.
     * This will help us integrate with native `TextTrack`s if the browser supports them.
     *
     * @type {boolean}
     * @default
     */
    Tech.prototype.featuresNativeTextTracks = false;

    /**
     * A functional mixin for techs that want to use the Source Handler pattern.
     * Source handlers are scripts for handling specific formats.
     * The source handler pattern is used for adaptive formats (HLS, DASH) that
     * manually load video data and feed it into a Source Buffer (Media Source Extensions)
     * Example: `Tech.withSourceHandlers.call(MyTech);`
     *
     * @param {Tech} _Tech
     *        The tech to add source handler functions to.
     *
     * @mixes Tech~SourceHandlerAdditions
     */
    Tech.withSourceHandlers = function (_Tech) {

        /**
         * Register a source handler
         *
         * @param {Function} handler
         *        The source handler class
         *
         * @param {number} [index]
         *        Register it at the following index
         */
        _Tech.registerSourceHandler = function (handler, index) {
            var handlers = _Tech.sourceHandlers;

            if (!handlers) {
                handlers = _Tech.sourceHandlers = [];
            }

            if (index === undefined) {
                // add to the end of the list
                index = handlers.length;
            }

            handlers.splice(index, 0, handler);
        };

        /**
         * Check if the tech can support the given type. Also checks the
         * Techs sourceHandlers.
         *
         * @param {string} type
         *         The mimetype to check.
         *
         * @return {string}
         *         'probably', 'maybe', or '' (empty string)
         */
        _Tech.canPlayType = function (type) {
            var handlers = _Tech.sourceHandlers || [];
            var can = void 0;

            for (var i = 0; i < handlers.length; i++) {
                can = handlers[i].canPlayType(type);

                if (can) {
                    return can;
                }
            }

            return '';
        };

        /**
         * Returns the first source handler that supports the source.
         *
         * TODO: Answer question: should 'probably' be prioritized over 'maybe'
         *
         * @param {Tech~SourceObject} source
         *        The source object
         *
         * @param {Object} options
         *        The options passed to the tech
         *
         * @return {SourceHandler|null}
         *          The first source handler that supports the source or null if
         *          no SourceHandler supports the source
         */
        _Tech.selectSourceHandler = function (source, options) {
            var handlers = _Tech.sourceHandlers || [];
            var can = void 0;

            for (var i = 0; i < handlers.length; i++) {
                can = handlers[i].canHandleSource(source, options);

                if (can) {
                    return handlers[i];
                }
            }

            return null;
        };

        /**
         * Check if the tech can support the given source.
         *
         * @param {Tech~SourceObject} srcObj
         *        The source object
         *
         * @param {Object} options
         *        The options passed to the tech
         *
         * @return {string}
         *         'probably', 'maybe', or '' (empty string)
         */
        _Tech.canPlaySource = function (srcObj, options) {
            var sh = _Tech.selectSourceHandler(srcObj, options);

            if (sh) {
                return sh.canHandleSource(srcObj, options);
            }

            return '';
        };

        /**
         * When using a source handler, prefer its implementation of
         * any function normally provided by the tech.
         */
        var deferrable = ['seekable', 'duration'];

        /**
         * A wrapper around {@link Tech#seekable} that will call a `SourceHandler`s seekable
         * function if it exists, with a fallback to the Techs seekable function.
         *
         * @method _Tech.seekable
         */

        /**
         * A wrapper around {@link Tech#duration} that will call a `SourceHandler`s duration
         * function if it exists, otherwise it will fallback to the techs duration function.
         *
         * @method _Tech.duration
         */

        deferrable.forEach(function (fnName) {
            var originalFn = this[fnName];

            if (typeof originalFn !== 'function') {
                return;
            }

            this[fnName] = function () {
                if (this.sourceHandler_ && this.sourceHandler_[fnName]) {
                    return this.sourceHandler_[fnName].apply(this.sourceHandler_, arguments);
                }
                return originalFn.apply(this, arguments);
            };
        }, _Tech.prototype);

        /**
         * Create a function for setting the source using a source object
         * and source handlers.
         * Should never be called unless a source handler was found.
         *
         * @param {Tech~SourceObject} source
         *        A source object with src and type keys
         */
        _Tech.prototype.setSource = function (source) {
            var sh = _Tech.selectSourceHandler(source, this.options_);

            if (!sh) {
                // Fall back to a native source hander when unsupported sources are
                // deliberately set
                if (_Tech.nativeSourceHandler) {
                    sh = _Tech.nativeSourceHandler;
                } else {
                    log$1.error('No source hander found for the current source.');
                }
            }

            // Dispose any existing source handler
            this.disposeSourceHandler();
            this.off('dispose', this.disposeSourceHandler);

            if (sh !== _Tech.nativeSourceHandler) {
                this.currentSource_ = source;
            }

            this.sourceHandler_ = sh.handleSource(source, this, this.options_);
            this.on('dispose', this.disposeSourceHandler);
        };

        /**
         * Clean up any existing SourceHandlers and listeners when the Tech is disposed.
         *
         * @listens Tech#dispose
         */
        _Tech.prototype.disposeSourceHandler = function () {
            // if we have a source and get another one
            // then we are loading something new
            // than clear all of our current tracks
            if (this.currentSource_) {
                this.clearTracks(['audio', 'video']);
                this.currentSource_ = null;
            }

            // always clean up auto-text tracks
            this.cleanupAutoTextTracks();

            if (this.sourceHandler_) {

                if (this.sourceHandler_.dispose) {
                    this.sourceHandler_.dispose();
                }

                this.sourceHandler_ = null;
            }
        };
    };

// The base Tech class needs to be registered as a Component. It is the only
// Tech that can be registered as a Component.
    Component.registerComponent('Tech', Tech);
    Tech.registerTech('Tech', Tech);

    /**
     * A list of techs that should be added to techOrder on Players
     *
     * @private
     */
    Tech.defaultTechOrder_ = [];

    var middlewares = {};

    function use(type, middleware) {
        middlewares[type] = middlewares[type] || [];
        middlewares[type].push(middleware);
    }



    function setSource(player, src, next) {
        player.setTimeout(function () {
            return setSourceHelper(src, middlewares[src.type], next, player);
        }, 1);
    }

    function setTech(middleware, tech) {
        middleware.forEach(function (mw) {
            return mw.setTech && mw.setTech(tech);
        });
    }

    function get$1(middleware, tech, method) {
        return middleware.reduceRight(middlewareIterator(method), tech[method]());
    }

    function set$1(middleware, tech, method, arg) {
        return tech[method](middleware.reduce(middlewareIterator(method), arg));
    }

    var allowedGetters = {
        buffered: 1,
        currentTime: 1,
        duration: 1,
        seekable: 1,
        played: 1
    };

    var allowedSetters = {
        setCurrentTime: 1
    };

    function middlewareIterator(method) {
        return function (value, mw) {
            if (mw[method]) {
                return mw[method](value);
            }

            return value;
        };
    }

    function setSourceHelper() {
        var src = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
        var middleware = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
        var next = arguments[2];
        var player = arguments[3];
        var acc = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : [];
        var lastRun = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : false;
        var mwFactory = middleware[0],
            mwrest = middleware.slice(1);

        // if mwFactory is a string, then we're at a fork in the road

        if (typeof mwFactory === 'string') {
            setSourceHelper(src, middlewares[mwFactory], next, player, acc, lastRun);

            // if we have an mwFactory, call it with the player to get the mw,
            // then call the mw's setSource method
        } else if (mwFactory) {
            var mw = mwFactory(player);

            mw.setSource(assign({}, src), function (err, _src) {

                // something happened, try the next middleware on the current level
                // make sure to use the old src
                if (err) {
                    return setSourceHelper(src, mwrest, next, player, acc, lastRun);
                }

                // we've succeeded, now we need to go deeper
                acc.push(mw);

                // if it's the same time, continue does the current chain
                // otherwise, we want to go down the new chain
                setSourceHelper(_src, src.type === _src.type ? mwrest : middlewares[_src.type], next, player, acc, lastRun);
            });
        } else if (mwrest.length) {
            setSourceHelper(src, mwrest, next, player, acc, lastRun);
        } else if (lastRun) {
            next(src, acc);
        } else {
            setSourceHelper(src, middlewares['*'], next, player, acc, true);
        }
    }

    /**
     * @module filter-source
     */
    /**
     * Filter out single bad source objects or multiple source objects in an
     * array. Also flattens nested source object arrays into a 1 dimensional
     * array of source objects.
     *
     * @param {Tech~SourceObject|Tech~SourceObject[]} src
     *        The src object to filter
     *
     * @return {Tech~SourceObject[]}
     *         An array of sourceobjects containing only valid sources
     *
     * @private
     */
    var filterSource = function filterSource(src) {
        // traverse array
        if (Array.isArray(src)) {
            var newsrc = [];

            src.forEach(function (srcobj) {
                srcobj = filterSource(srcobj);

                if (Array.isArray(srcobj)) {
                    newsrc = newsrc.concat(srcobj);
                } else if (isObject(srcobj)) {
                    newsrc.push(srcobj);
                }
            });

            src = newsrc;
        } else if (typeof src === 'string' && src.trim()) {
            // convert string into object
            src = [{ src: src }];
        } else if (isObject(src) && typeof src.src === 'string' && src.src && src.src.trim()) {
            // src is already valid
            src = [src];
        } else {
            // invalid source, turn it into an empty array
            src = [];
        }

        return src;
    };

    /**
     * @file loader.js
     */
    /**
     * The `MediaLoader` is the `Component` that decides which playback technology to load
     * when a player is initialized.
     *
     * @extends Component
     */

    var MediaLoader = function (_Component) {
        inherits(MediaLoader, _Component);

        /**
         * Create an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should attach to.
         *
         * @param {Object} [options]
         *        The key/value stroe of player options.
         *
         * @param {Component~ReadyCallback} [ready]
         *        The function that is run when this component is ready.
         */
        function MediaLoader(player, options, ready) {
            classCallCheck(this, MediaLoader);

            // MediaLoader has no element
            var options_ = mergeOptions({ createEl: false }, options);

            // If there are no sources when the player is initialized,
            // load the first supported playback technology.

            var _this = possibleConstructorReturn(this, _Component.call(this, player, options_, ready));

            if (!options.playerOptions.sources || options.playerOptions.sources.length === 0) {
                for (var i = 0, j = options.playerOptions.techOrder; i < j.length; i++) {
                    var techName = toTitleCase(j[i]);
                    var tech = Tech.getTech(techName);

                    // Support old behavior of techs being registered as components.
                    // Remove once that deprecated behavior is removed.
                    if (!techName) {
                        tech = Component.getComponent(techName);
                    }

                    // Check if the browser supports this technology
                    if (tech && tech.isSupported()) {
                        player.loadTech_(techName);
                        break;
                    }
                }
            } else {
                // Loop through playback technologies (HTML5, Flash) and check for support.
                // Then load the best source.
                // A few assumptions here:
                //   All playback technologies respect preload false.
                player.src(options.playerOptions.sources);
            }
            return _this;
        }

        return MediaLoader;
    }(Component);

    Component.registerComponent('MediaLoader', MediaLoader);

    /**
     * @file button.js
     */
    /**
     * Clickable Component which is clickable or keyboard actionable,
     * but is not a native HTML button.
     *
     * @extends Component
     */

    var ClickableComponent = function (_Component) {
        inherits(ClickableComponent, _Component);

        /**
         * Creates an instance of this class.
         *
         * @param  {Player} player
         *         The `Player` that this class should be attached to.
         *
         * @param  {Object} [options]
         *         The key/value store of player options.
         */
        function ClickableComponent(player, options) {
            classCallCheck(this, ClickableComponent);

            var _this = possibleConstructorReturn(this, _Component.call(this, player, options));

            _this.emitTapEvents();

            _this.enable();
            return _this;
        }

        /**
         * Create the `Component`s DOM element.
         *
         * @param {string} [tag=div]
         *        The element's node type.
         *
         * @param {Object} [props={}]
         *        An object of properties that should be set on the element.
         *
         * @param {Object} [attributes={}]
         *        An object of attributes that should be set on the element.
         *
         * @return {Element}
         *         The element that gets created.
         */


        ClickableComponent.prototype.createEl = function createEl$$1() {
            var tag = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'div';
            var props = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
            var attributes = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};

            props = assign({
                innerHTML: '<span aria-hidden="true" class="vjs-icon-placeholder"></span>',
                className: this.buildCSSClass(),
                tabIndex: 0
            }, props);

            if (tag === 'button') {
                log$1.error('Creating a ClickableComponent with an HTML element of ' + tag + ' is not supported; use a Button instead.');
            }

            // Add ARIA attributes for clickable element which is not a native HTML button
            attributes = assign({
                'role': 'button',

                // let the screen reader user know that the text of the element may change
                'aria-live': 'polite'
            }, attributes);

            this.tabIndex_ = props.tabIndex;

            var el = _Component.prototype.createEl.call(this, tag, props, attributes);

            this.createControlTextEl(el);

            return el;
        };

        /**
         * Create a control text element on this `Component`
         *
         * @param {Element} [el]
         *        Parent element for the control text.
         *
         * @return {Element}
         *         The control text element that gets created.
         */


        ClickableComponent.prototype.createControlTextEl = function createControlTextEl(el) {
            this.controlTextEl_ = createEl('span', {
                className: 'vjs-control-text'
            });

            if (el) {
                el.appendChild(this.controlTextEl_);
            }

            this.controlText(this.controlText_, el);

            return this.controlTextEl_;
        };

        /**
         * Get or set the localize text to use for the controls on the `Component`.
         *
         * @param {string} [text]
         *        Control text for element.
         *
         * @param {Element} [el=this.el()]
         *        Element to set the title on.
         *
         * @return {string}
         *         - The control text when getting
         */


        ClickableComponent.prototype.controlText = function controlText(text) {
            var el = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : this.el();

            if (!text) {
                return this.controlText_ || 'Need Text';
            }

            var localizedText = this.localize(text);

            this.controlText_ = text;
            textContent(this.controlTextEl_, localizedText);
            if (!this.nonIconControl) {
                // Set title attribute if only an icon is shown
                el.setAttribute('title', localizedText);
            }
        };

        /**
         * Builds the default DOM `className`.
         *
         * @return {string}
         *         The DOM `className` for this object.
         */


        ClickableComponent.prototype.buildCSSClass = function buildCSSClass() {
            return 'vjs-control vjs-button ' + _Component.prototype.buildCSSClass.call(this);
        };

        /**
         * Enable this `Component`s element.
         */


        ClickableComponent.prototype.enable = function enable() {
            if (!this.enabled_) {
                this.enabled_ = true;
                this.removeClass('vjs-disabled');
                this.el_.setAttribute('aria-disabled', 'false');
                if (typeof this.tabIndex_ !== 'undefined') {
                    this.el_.setAttribute('tabIndex', this.tabIndex_);
                }
                this.on(['tap', 'click'], this.handleClick);
                this.on('focus', this.handleFocus);
                this.on('blur', this.handleBlur);
            }
        };

        /**
         * Disable this `Component`s element.
         */


        ClickableComponent.prototype.disable = function disable() {
            this.enabled_ = false;
            this.addClass('vjs-disabled');
            this.el_.setAttribute('aria-disabled', 'true');
            if (typeof this.tabIndex_ !== 'undefined') {
                this.el_.removeAttribute('tabIndex');
            }
            this.off(['tap', 'click'], this.handleClick);
            this.off('focus', this.handleFocus);
            this.off('blur', this.handleBlur);
        };

        /**
         * This gets called when a `ClickableComponent` gets:
         * - Clicked (via the `click` event, listening starts in the constructor)
         * - Tapped (via the `tap` event, listening starts in the constructor)
         * - The following things happen in order:
         *   1. {@link ClickableComponent#handleFocus} is called via a `focus` event on the
         *      `ClickableComponent`.
         *   2. {@link ClickableComponent#handleFocus} adds a listener for `keydown` on using
         *      {@link ClickableComponent#handleKeyPress}.
         *   3. `ClickableComponent` has not had a `blur` event (`blur` means that focus was lost). The user presses
         *      the space or enter key.
         *   4. {@link ClickableComponent#handleKeyPress} calls this function with the `keydown`
         *      event as a parameter.
         *
         * @param {EventTarget~Event} event
         *        The `keydown`, `tap`, or `click` event that caused this function to be
         *        called.
         *
         * @listens tap
         * @listens click
         * @abstract
         */


        ClickableComponent.prototype.handleClick = function handleClick(event) {};

        /**
         * This gets called when a `ClickableComponent` gains focus via a `focus` event.
         * Turns on listening for `keydown` events. When they happen it
         * calls `this.handleKeyPress`.
         *
         * @param {EventTarget~Event} event
         *        The `focus` event that caused this function to be called.
         *
         * @listens focus
         */


        ClickableComponent.prototype.handleFocus = function handleFocus(event) {
            on(document_1, 'keydown', bind(this, this.handleKeyPress));
        };

        /**
         * Called when this ClickableComponent has focus and a key gets pressed down. By
         * default it will call `this.handleClick` when the key is space or enter.
         *
         * @param {EventTarget~Event} event
         *        The `keydown` event that caused this function to be called.
         *
         * @listens keydown
         */


        ClickableComponent.prototype.handleKeyPress = function handleKeyPress(event) {

            // Support Space (32) or Enter (13) key operation to fire a click event
            if (event.which === 32 || event.which === 13) {
                event.preventDefault();
                this.trigger('click');
            } else if (_Component.prototype.handleKeyPress) {

                // Pass keypress handling up for unsupported keys
                _Component.prototype.handleKeyPress.call(this, event);
            }
        };

        /**
         * Called when a `ClickableComponent` loses focus. Turns off the listener for
         * `keydown` events. Which Stops `this.handleKeyPress` from getting called.
         *
         * @param {EventTarget~Event} event
         *        The `blur` event that caused this function to be called.
         *
         * @listens blur
         */


        ClickableComponent.prototype.handleBlur = function handleBlur(event) {
            off(document_1, 'keydown', bind(this, this.handleKeyPress));
        };

        return ClickableComponent;
    }(Component);

    Component.registerComponent('ClickableComponent', ClickableComponent);

    /**
     * @file poster-image.js
     */
    /**
     * A `ClickableComponent` that handles showing the poster image for the player.
     *
     * @extends ClickableComponent
     */

    var PosterImage = function (_ClickableComponent) {
        inherits(PosterImage, _ClickableComponent);

        /**
         * Create an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should attach to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         */
        function PosterImage(player, options) {
            classCallCheck(this, PosterImage);

            var _this = possibleConstructorReturn(this, _ClickableComponent.call(this, player, options));

            _this.update();
            player.on('posterchange', bind(_this, _this.update));
            return _this;
        }

        /**
         * Clean up and dispose of the `PosterImage`.
         */


        PosterImage.prototype.dispose = function dispose() {
            this.player().off('posterchange', this.update);
            _ClickableComponent.prototype.dispose.call(this);
        };

        /**
         * Create the `PosterImage`s DOM element.
         *
         * @return {Element}
         *         The element that gets created.
         */


        PosterImage.prototype.createEl = function createEl$$1() {
            var el = createEl('div', {
                className: 'vjs-poster',

                // Don't want poster to be tabbable.
                tabIndex: -1
            });

            // To ensure the poster image resizes while maintaining its original aspect
            // ratio, use a div with `background-size` when available. For browsers that
            // do not support `background-size` (e.g. IE8), fall back on using a regular
            // img element.
            if (!BACKGROUND_SIZE_SUPPORTED) {
                this.fallbackImg_ = createEl('img');
                el.appendChild(this.fallbackImg_);
            }

            return el;
        };

        /**
         * An {@link EventTarget~EventListener} for {@link Player#posterchange} events.
         *
         * @listens Player#posterchange
         *
         * @param {EventTarget~Event} [event]
         *        The `Player#posterchange` event that triggered this function.
         */


        PosterImage.prototype.update = function update(event) {
            var url = this.player().poster();

            this.setSrc(url);

            // If there's no poster source we should display:none on this component
            // so it's not still clickable or right-clickable
            if (url) {
                this.show();
            } else {
                this.hide();
            }
        };

        /**
         * Set the source of the `PosterImage` depending on the display method.
         *
         * @param {string} url
         *        The URL to the source for the `PosterImage`.
         */


        PosterImage.prototype.setSrc = function setSrc(url) {
            if (this.fallbackImg_) {
                this.fallbackImg_.src = url;
            } else {
                var backgroundImage = '';

                // Any falsey values should stay as an empty string, otherwise
                // this will throw an extra error
                if (url) {
                    backgroundImage = 'url("' + url + '")';
                }

                this.el_.style.backgroundImage = backgroundImage;
            }
        };

        /**
         * An {@link EventTarget~EventListener} for clicks on the `PosterImage`. See
         * {@link ClickableComponent#handleClick} for instances where this will be triggered.
         *
         * @listens tap
         * @listens click
         * @listens keydown
         *
         * @param {EventTarget~Event} event
         +        The `click`, `tap` or `keydown` event that caused this function to be called.
         */


        PosterImage.prototype.handleClick = function handleClick(event) {
            // We don't want a click to trigger playback when controls are disabled
            if (!this.player_.controls()) {
                return;
            }

            if (this.player_.paused()) {
                this.player_.play();
            } else {
                this.player_.pause();
            }
        };

        return PosterImage;
    }(ClickableComponent);

    Component.registerComponent('PosterImage', PosterImage);

    /**
     * @file text-track-display.js
     */
    var darkGray = '#222';
    var lightGray = '#ccc';
    var fontMap = {
        monospace: 'monospace',
        sansSerif: 'sans-serif',
        serif: 'serif',
        monospaceSansSerif: '"Andale Mono", "Lucida Console", monospace',
        monospaceSerif: '"Courier New", monospace',
        proportionalSansSerif: 'sans-serif',
        proportionalSerif: 'serif',
        casual: '"Comic Sans MS", Impact, fantasy',
        script: '"Monotype Corsiva", cursive',
        smallcaps: '"Andale Mono", "Lucida Console", monospace, sans-serif'
    };

    /**
     * Construct an rgba color from a given hex color code.
     *
     * @param {number} color
     *        Hex number for color, like #f0e.
     *
     * @param {number} opacity
     *        Value for opacity, 0.0 - 1.0.
     *
     * @return {string}
     *         The rgba color that was created, like 'rgba(255, 0, 0, 0.3)'.
     *
     * @private
     */
    function constructColor(color, opacity) {
        return 'rgba(' +
            // color looks like "#f0e"
            parseInt(color[1] + color[1], 16) + ',' + parseInt(color[2] + color[2], 16) + ',' + parseInt(color[3] + color[3], 16) + ',' + opacity + ')';
    }

    /**
     * Try to update the style of a DOM element. Some style changes will throw an error,
     * particularly in IE8. Those should be noops.
     *
     * @param {Element} el
     *        The DOM element to be styled.
     *
     * @param {string} style
     *        The CSS property on the element that should be styled.
     *
     * @param {string} rule
     *        The style rule that should be applied to the property.
     *
     * @private
     */
    function tryUpdateStyle(el, style, rule) {
        try {
            el.style[style] = rule;
        } catch (e) {

            // Satisfies linter.
            return;
        }
    }

    /**
     * The component for displaying text track cues.
     *
     * @extends Component
     */

    var TextTrackDisplay = function (_Component) {
        inherits(TextTrackDisplay, _Component);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         *
         * @param {Component~ReadyCallback} [ready]
         *        The function to call when `TextTrackDisplay` is ready.
         */
        function TextTrackDisplay(player, options, ready) {
            classCallCheck(this, TextTrackDisplay);

            var _this = possibleConstructorReturn(this, _Component.call(this, player, options, ready));

            player.on('loadstart', bind(_this, _this.toggleDisplay));
            player.on('texttrackchange', bind(_this, _this.updateDisplay));
            player.on('loadstart', bind(_this, _this.preselectTrack));

            // This used to be called during player init, but was causing an error
            // if a track should show by default and the display hadn't loaded yet.
            // Should probably be moved to an external track loader when we support
            // tracks that don't need a display.
            player.ready(bind(_this, function () {
                if (player.tech_ && player.tech_.featuresNativeTextTracks) {
                    this.hide();
                    return;
                }

                player.on('fullscreenchange', bind(this, this.updateDisplay));

                var tracks = this.options_.playerOptions.tracks || [];

                for (var i = 0; i < tracks.length; i++) {
                    this.player_.addRemoteTextTrack(tracks[i], true);
                }

                this.preselectTrack();
            }));
            return _this;
        }

        /**
         * Preselect a track following this precedence:
         * - matches the previously selected {@link TextTrack}'s language and kind
         * - matches the previously selected {@link TextTrack}'s language only
         * - is the first default captions track
         * - is the first default descriptions track
         *
         * @listens Player#loadstart
         */


        TextTrackDisplay.prototype.preselectTrack = function preselectTrack() {
            var modes = { captions: 1, subtitles: 1 };
            var trackList = this.player_.textTracks();
            var userPref = this.player_.cache_.selectedLanguage;
            var firstDesc = void 0;
            var firstCaptions = void 0;
            var preferredTrack = void 0;

            for (var i = 0; i < trackList.length; i++) {
                var track = trackList[i];

                if (userPref && userPref.enabled && userPref.language === track.language) {
                    // Always choose the track that matches both language and kind
                    if (track.kind === userPref.kind) {
                        preferredTrack = track;
                        // or choose the first track that matches language
                    } else if (!preferredTrack) {
                        preferredTrack = track;
                    }

                    // clear everything if offTextTrackMenuItem was clicked
                } else if (userPref && !userPref.enabled) {
                    preferredTrack = null;
                    firstDesc = null;
                    firstCaptions = null;
                } else if (track['default']) {
                    if (track.kind === 'descriptions' && !firstDesc) {
                        firstDesc = track;
                    } else if (track.kind in modes && !firstCaptions) {
                        firstCaptions = track;
                    }
                }
            }

            // The preferredTrack matches the user preference and takes
            // precendence over all the other tracks.
            // So, display the preferredTrack before the first default track
            // and the subtitles/captions track before the descriptions track
            if (preferredTrack) {
                preferredTrack.mode = 'showing';
            } else if (firstCaptions) {
                firstCaptions.mode = 'showing';
            } else if (firstDesc) {
                firstDesc.mode = 'showing';
            }
        };

        /**
         * Turn display of {@link TextTrack}'s from the current state into the other state.
         * There are only two states:
         * - 'shown'
         * - 'hidden'
         *
         * @listens Player#loadstart
         */


        TextTrackDisplay.prototype.toggleDisplay = function toggleDisplay() {
            if (this.player_.tech_ && this.player_.tech_.featuresNativeTextTracks) {
                this.hide();
            } else {
                this.show();
            }
        };

        /**
         * Create the {@link Component}'s DOM element.
         *
         * @return {Element}
         *         The element that was created.
         */


        TextTrackDisplay.prototype.createEl = function createEl() {
            return _Component.prototype.createEl.call(this, 'div', {
                className: 'vjs-text-track-display'
            }, {
                'aria-live': 'off',
                'aria-atomic': 'true'
            });
        };

        /**
         * Clear all displayed {@link TextTrack}s.
         */


        TextTrackDisplay.prototype.clearDisplay = function clearDisplay() {
            if (typeof window_1.WebVTT === 'function') {
                window_1.WebVTT.processCues(window_1, [], this.el_);
            }
        };

        /**
         * Update the displayed TextTrack when a either a {@link Player#texttrackchange} or
         * a {@link Player#fullscreenchange} is fired.
         *
         * @listens Player#texttrackchange
         * @listens Player#fullscreenchange
         */


        TextTrackDisplay.prototype.updateDisplay = function updateDisplay() {
            var tracks = this.player_.textTracks();

            this.clearDisplay();

            // Track display prioritization model: if multiple tracks are 'showing',
            //  display the first 'subtitles' or 'captions' track which is 'showing',
            //  otherwise display the first 'descriptions' track which is 'showing'

            var descriptionsTrack = null;
            var captionsSubtitlesTrack = null;
            var i = tracks.length;

            while (i--) {
                var track = tracks[i];

                if (track.mode === 'showing') {
                    if (track.kind === 'descriptions') {
                        descriptionsTrack = track;
                    } else {
                        captionsSubtitlesTrack = track;
                    }
                }
            }

            if (captionsSubtitlesTrack) {
                if (this.getAttribute('aria-live') !== 'off') {
                    this.setAttribute('aria-live', 'off');
                }
                this.updateForTrack(captionsSubtitlesTrack);
            } else if (descriptionsTrack) {
                if (this.getAttribute('aria-live') !== 'assertive') {
                    this.setAttribute('aria-live', 'assertive');
                }
                this.updateForTrack(descriptionsTrack);
            }
        };

        /**
         * Add an {@link Texttrack} to to the {@link Tech}s {@link TextTrackList}.
         *
         * @param {TextTrack} track
         *        Text track object to be added to the list.
         */


        TextTrackDisplay.prototype.updateForTrack = function updateForTrack(track) {
            if (typeof window_1.WebVTT !== 'function' || !track.activeCues) {
                return;
            }

            var overrides = this.player_.textTrackSettings.getValues();
            var cues = [];

            for (var _i = 0; _i < track.activeCues.length; _i++) {
                cues.push(track.activeCues[_i]);
            }

            window_1.WebVTT.processCues(window_1, cues, this.el_);

            var i = cues.length;

            while (i--) {
                var cue = cues[i];

                if (!cue) {
                    continue;
                }

                var cueDiv = cue.displayState;

                if (overrides.color) {
                    cueDiv.firstChild.style.color = overrides.color;
                }
                if (overrides.textOpacity) {
                    tryUpdateStyle(cueDiv.firstChild, 'color', constructColor(overrides.color || '#fff', overrides.textOpacity));
                }
                if (overrides.backgroundColor) {
                    cueDiv.firstChild.style.backgroundColor = overrides.backgroundColor;
                }
                if (overrides.backgroundOpacity) {
                    tryUpdateStyle(cueDiv.firstChild, 'backgroundColor', constructColor(overrides.backgroundColor || '#000', overrides.backgroundOpacity));
                }
                if (overrides.windowColor) {
                    if (overrides.windowOpacity) {
                        tryUpdateStyle(cueDiv, 'backgroundColor', constructColor(overrides.windowColor, overrides.windowOpacity));
                    } else {
                        cueDiv.style.backgroundColor = overrides.windowColor;
                    }
                }
                if (overrides.edgeStyle) {
                    if (overrides.edgeStyle === 'dropshadow') {
                        cueDiv.firstChild.style.textShadow = '2px 2px 3px ' + darkGray + ', 2px 2px 4px ' + darkGray + ', 2px 2px 5px ' + darkGray;
                    } else if (overrides.edgeStyle === 'raised') {
                        cueDiv.firstChild.style.textShadow = '1px 1px ' + darkGray + ', 2px 2px ' + darkGray + ', 3px 3px ' + darkGray;
                    } else if (overrides.edgeStyle === 'depressed') {
                        cueDiv.firstChild.style.textShadow = '1px 1px ' + lightGray + ', 0 1px ' + lightGray + ', -1px -1px ' + darkGray + ', 0 -1px ' + darkGray;
                    } else if (overrides.edgeStyle === 'uniform') {
                        cueDiv.firstChild.style.textShadow = '0 0 4px ' + darkGray + ', 0 0 4px ' + darkGray + ', 0 0 4px ' + darkGray + ', 0 0 4px ' + darkGray;
                    }
                }
                if (overrides.fontPercent && overrides.fontPercent !== 1) {
                    var fontSize = window_1.parseFloat(cueDiv.style.fontSize);

                    cueDiv.style.fontSize = fontSize * overrides.fontPercent + 'px';
                    cueDiv.style.height = 'auto';
                    cueDiv.style.top = 'auto';
                    cueDiv.style.bottom = '2px';
                }
                if (overrides.fontFamily && overrides.fontFamily !== 'default') {
                    if (overrides.fontFamily === 'small-caps') {
                        cueDiv.firstChild.style.fontVariant = 'small-caps';
                    } else {
                        cueDiv.firstChild.style.fontFamily = fontMap[overrides.fontFamily];
                    }
                }
            }
        };

        return TextTrackDisplay;
    }(Component);

    Component.registerComponent('TextTrackDisplay', TextTrackDisplay);

    /**
     * @file loading-spinner.js
     */
    /**
     * A loading spinner for use during waiting/loading events.
     *
     * @extends Component
     */

    var LoadingSpinner = function (_Component) {
        inherits(LoadingSpinner, _Component);

        function LoadingSpinner() {
            classCallCheck(this, LoadingSpinner);
            return possibleConstructorReturn(this, _Component.apply(this, arguments));
        }

        /**
         * Create the `LoadingSpinner`s DOM element.
         *
         * @return {Element}
         *         The dom element that gets created.
         */
        LoadingSpinner.prototype.createEl = function createEl() {
            return _Component.prototype.createEl.call(this, 'div', {
                className: 'vjs-loading-spinner',
                dir: 'ltr'
            });
        };

        return LoadingSpinner;
    }(Component);

    Component.registerComponent('LoadingSpinner', LoadingSpinner);

    /**
     * @file button.js
     */
    /**
     * Base class for all buttons.
     *
     * @extends ClickableComponent
     */

    var Button = function (_ClickableComponent) {
        inherits(Button, _ClickableComponent);

        function Button() {
            classCallCheck(this, Button);
            return possibleConstructorReturn(this, _ClickableComponent.apply(this, arguments));
        }

        /**
         * Create the `Button`s DOM element.
         *
         * @param {string} [tag="button"]
         *        The element's node type. This argument is IGNORED: no matter what
         *        is passed, it will always create a `button` element.
         *
         * @param {Object} [props={}]
         *        An object of properties that should be set on the element.
         *
         * @param {Object} [attributes={}]
         *        An object of attributes that should be set on the element.
         *
         * @return {Element}
         *         The element that gets created.
         */
        Button.prototype.createEl = function createEl(tag) {
            var props = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
            var attributes = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};

            tag = 'button';

            props = assign({
                innerHTML: '<span aria-hidden="true" class="vjs-icon-placeholder"></span>',
                className: this.buildCSSClass()
            }, props);

            // Add attributes for button element
            attributes = assign({

                // Necessary since the default button type is "submit"
                'type': 'button',

                // let the screen reader user know that the text of the button may change
                'aria-live': 'polite'
            }, attributes);

            var el = Component.prototype.createEl.call(this, tag, props, attributes);

            this.createControlTextEl(el);

            return el;
        };

        /**
         * Add a child `Component` inside of this `Button`.
         *
         * @param {string|Component} child
         *        The name or instance of a child to add.
         *
         * @param {Object} [options={}]
         *        The key/value store of options that will get passed to children of
         *        the child.
         *
         * @return {Component}
         *         The `Component` that gets added as a child. When using a string the
         *         `Component` will get created by this process.
         *
         * @deprecated since version 5
         */


        Button.prototype.addChild = function addChild(child) {
            var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

            var className = this.constructor.name;

            log$1.warn('Adding an actionable (user controllable) child to a Button (' + className + ') is not supported; use a ClickableComponent instead.');

            // Avoid the error message generated by ClickableComponent's addChild method
            return Component.prototype.addChild.call(this, child, options);
        };

        /**
         * Enable the `Button` element so that it can be activated or clicked. Use this with
         * {@link Button#disable}.
         */


        Button.prototype.enable = function enable() {
            _ClickableComponent.prototype.enable.call(this);
            this.el_.removeAttribute('disabled');
        };

        /**
         * Enable the `Button` element so that it cannot be activated or clicked. Use this with
         * {@link Button#enable}.
         */


        Button.prototype.disable = function disable() {
            _ClickableComponent.prototype.disable.call(this);
            this.el_.setAttribute('disabled', 'disabled');
        };

        /**
         * This gets called when a `Button` has focus and `keydown` is triggered via a key
         * press.
         *
         * @param {EventTarget~Event} event
         *        The event that caused this function to get called.
         *
         * @listens keydown
         */


        Button.prototype.handleKeyPress = function handleKeyPress(event) {

            // Ignore Space (32) or Enter (13) key operation, which is handled by the browser for a button.
            if (event.which === 32 || event.which === 13) {
                return;
            }

            // Pass keypress handling up for unsupported keys
            _ClickableComponent.prototype.handleKeyPress.call(this, event);
        };

        return Button;
    }(ClickableComponent);

    Component.registerComponent('Button', Button);

    /**
     * @file big-play-button.js
     */
    /**
     * The initial play button that shows before the video has played. The hiding of the
     * `BigPlayButton` get done via CSS and `Player` states.
     *
     * @extends Button
     */

    var BigPlayButton = function (_Button) {
        inherits(BigPlayButton, _Button);

        function BigPlayButton(player, options) {
            classCallCheck(this, BigPlayButton);

            var _this = possibleConstructorReturn(this, _Button.call(this, player, options));

            _this.mouseused_ = false;

            _this.on('mousedown', _this.handleMouseDown);
            return _this;
        }

        /**
         * Builds the default DOM `className`.
         *
         * @return {string}
         *         The DOM `className` for this object. Always returns 'vjs-big-play-button'.
         */


        BigPlayButton.prototype.buildCSSClass = function buildCSSClass() {
            return 'vjs-big-play-button';
        };

        /**
         * This gets called when a `BigPlayButton` "clicked". See {@link ClickableComponent}
         * for more detailed information on what a click can be.
         *
         * @param {EventTarget~Event} event
         *        The `keydown`, `tap`, or `click` event that caused this function to be
         *        called.
         *
         * @listens tap
         * @listens click
         */


        BigPlayButton.prototype.handleClick = function handleClick(event) {
            var playPromise = this.player_.play();

            // exit early if clicked via the mouse
            if (this.mouseused_ && event.clientX && event.clientY) {
                return;
            }

            var cb = this.player_.getChild('controlBar');
            var playToggle = cb && cb.getChild('playToggle');

            if (!playToggle) {
                this.player_.focus();
                return;
            }

            var playFocus = function playFocus() {
                return playToggle.focus();
            };

            if (playPromise && playPromise.then) {
                var ignoreRejectedPlayPromise = function ignoreRejectedPlayPromise() {};

                playPromise.then(playFocus, ignoreRejectedPlayPromise);
            } else {
                this.setTimeout(playFocus, 1);
            }
        };

        BigPlayButton.prototype.handleKeyPress = function handleKeyPress(event) {
            this.mouseused_ = false;

            _Button.prototype.handleKeyPress.call(this, event);
        };

        BigPlayButton.prototype.handleMouseDown = function handleMouseDown(event) {
            this.mouseused_ = true;
        };

        return BigPlayButton;
    }(Button);

    /**
     * The text that should display over the `BigPlayButton`s controls. Added to for localization.
     *
     * @type {string}
     * @private
     */


    BigPlayButton.prototype.controlText_ = 'Play Video';

    Component.registerComponent('BigPlayButton', BigPlayButton);

    /**
     * @file close-button.js
     */
    /**
     * The `CloseButton` is a `{@link Button}` that fires a `close` event when
     * it gets clicked.
     *
     * @extends Button
     */

    var CloseButton = function (_Button) {
        inherits(CloseButton, _Button);

        /**
         * Creates an instance of the this class.
         *
         * @param  {Player} player
         *         The `Player` that this class should be attached to.
         *
         * @param  {Object} [options]
         *         The key/value store of player options.
         */
        function CloseButton(player, options) {
            classCallCheck(this, CloseButton);

            var _this = possibleConstructorReturn(this, _Button.call(this, player, options));

            _this.controlText(options && options.controlText || _this.localize('Close'));
            return _this;
        }

        /**
         * Builds the default DOM `className`.
         *
         * @return {string}
         *         The DOM `className` for this object.
         */


        CloseButton.prototype.buildCSSClass = function buildCSSClass() {
            return 'vjs-close-button ' + _Button.prototype.buildCSSClass.call(this);
        };

        /**
         * This gets called when a `CloseButton` gets clicked. See
         * {@link ClickableComponent#handleClick} for more information on when this will be
         * triggered
         *
         * @param {EventTarget~Event} event
         *        The `keydown`, `tap`, or `click` event that caused this function to be
         *        called.
         *
         * @listens tap
         * @listens click
         * @fires CloseButton#close
         */


        CloseButton.prototype.handleClick = function handleClick(event) {

            /**
             * Triggered when the a `CloseButton` is clicked.
             *
             * @event CloseButton#close
             * @type {EventTarget~Event}
             *
             * @property {boolean} [bubbles=false]
             *           set to false so that the close event does not
             *           bubble up to parents if there is no listener
             */
            this.trigger({ type: 'close', bubbles: false });
        };

        return CloseButton;
    }(Button);

    Component.registerComponent('CloseButton', CloseButton);

    /**
     * @file play-toggle.js
     */
    /**
     * Button to toggle between play and pause.
     *
     * @extends Button
     */

    var PlayToggle = function (_Button) {
        inherits(PlayToggle, _Button);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         */
        function PlayToggle(player, options) {
            classCallCheck(this, PlayToggle);

            var _this = possibleConstructorReturn(this, _Button.call(this, player, options));

            _this.on(player, 'play', _this.handlePlay);
            _this.on(player, 'pause', _this.handlePause);
            _this.on(player, 'ended', _this.handleEnded);
            return _this;
        }

        /**
         * Builds the default DOM `className`.
         *
         * @return {string}
         *         The DOM `className` for this object.
         */


        PlayToggle.prototype.buildCSSClass = function buildCSSClass() {
            return 'vjs-play-control ' + _Button.prototype.buildCSSClass.call(this);
        };

        /**
         * This gets called when an `PlayToggle` is "clicked". See
         * {@link ClickableComponent} for more detailed information on what a click can be.
         *
         * @param {EventTarget~Event} [event]
         *        The `keydown`, `tap`, or `click` event that caused this function to be
         *        called.
         *
         * @listens tap
         * @listens click
         */


        PlayToggle.prototype.handleClick = function handleClick(event) {
            if (this.player_.paused()) {
                this.player_.play();
            } else {
                this.player_.pause();
            }
        };

        /**
         * Add the vjs-playing class to the element so it can change appearance.
         *
         * @param {EventTarget~Event} [event]
         *        The event that caused this function to run.
         *
         * @listens Player#play
         */


        PlayToggle.prototype.handlePlay = function handlePlay(event) {
            this.removeClass('vjs-ended');
            this.removeClass('vjs-paused');
            this.addClass('vjs-playing');
            // change the button text to "Pause"
            this.controlText('Pause');
        };

        /**
         * Add the vjs-paused class to the element so it can change appearance.
         *
         * @param {EventTarget~Event} [event]
         *        The event that caused this function to run.
         *
         * @listens Player#pause
         */


        PlayToggle.prototype.handlePause = function handlePause(event) {
            this.removeClass('vjs-playing');
            this.addClass('vjs-paused');
            // change the button text to "Play"
            this.controlText('Play');
        };

        /**
         * Add the vjs-ended class to the element so it can change appearance
         *
         */


        PlayToggle.prototype.handleEnded = function handleEnded(event) {
            this.removeClass('vjs-playing');
            this.addClass('vjs-ended');
            // change the button text to "Replay"
            this.controlText('Replay');
        };

        return PlayToggle;
    }(Button);

    /**
     * The text that should display over the `PlayToggle`s controls. Added for localization.
     *
     * @type {string}
     * @private
     */


    PlayToggle.prototype.controlText_ = 'Play';

    Component.registerComponent('PlayToggle', PlayToggle);

    /**
     * @file format-time.js
     * @module Format-time
     */

    /**
     * Format seconds as a time string, H:MM:SS or M:SS. Supplying a guide (in seconds)
     * will force a number of leading zeros to cover the length of the guide.
     *
     * @param {number} seconds
     *        Number of seconds to be turned into a string
     *
     * @param {number} guide
     *        Number (in seconds) to model the string after
     *
     * @return {string}
     *         Time formatted as H:MM:SS or M:SS
     */
    function formatTime(seconds) {
        var guide = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : seconds;

        seconds = seconds < 0 ? 0 : seconds;
        var s = Math.floor(seconds % 60);
        var m = Math.floor(seconds / 60 % 60);
        var h = Math.floor(seconds / 3600);
        var gm = Math.floor(guide / 60 % 60);
        var gh = Math.floor(guide / 3600);

        // handle invalid times
        if (isNaN(seconds) || seconds === Infinity) {
            // '-' is false for all relational operators (e.g. <, >=) so this setting
            // will add the minimum number of fields specified by the guide
            h = m = s = '-';
        }

        // Check if we need to show hours
        h = h > 0 || gh > 0 ? h + ':' : '';

        // If hours are showing, we may need to add a leading zero.
        // Always show at least one digit of minutes.
        m = ((h || gm >= 10) && m < 10 ? '0' + m : m) + ':';

        // Check if leading zero is need for seconds
        s = s < 10 ? '0' + s : s;

        return h + m + s;
    }

    /**
     * @file current-time-display.js
     */
    /**
     * Displays the current time
     *
     * @extends Component
     */

    var CurrentTimeDisplay = function (_Component) {
        inherits(CurrentTimeDisplay, _Component);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         */
        function CurrentTimeDisplay(player, options) {
            classCallCheck(this, CurrentTimeDisplay);

            var _this = possibleConstructorReturn(this, _Component.call(this, player, options));

            _this.throttledUpdateContent = throttle(bind(_this, _this.updateContent), 25);
            _this.on(player, 'timeupdate', _this.throttledUpdateContent);
            return _this;
        }

        /**
         * Create the `Component`'s DOM element
         *
         * @return {Element}
         *         The element that was created.
         */


        CurrentTimeDisplay.prototype.createEl = function createEl$$1() {
            var el = _Component.prototype.createEl.call(this, 'div', {
                className: 'vjs-current-time vjs-time-control vjs-control'
            });

            this.contentEl_ = createEl('div', {
                className: 'vjs-current-time-display'
            }, {
                // tell screen readers not to automatically read the time as it changes
                'aria-live': 'off'
            }, createEl('span', {
                className: 'vjs-control-text',
                textContent: this.localize('Current Time')
            }));

            this.updateTextNode_();
            el.appendChild(this.contentEl_);
            return el;
        };

        /**
         * Updates the "current time" text node with new content using the
         * contents of the `formattedTime_` property.
         *
         * @private
         */


        CurrentTimeDisplay.prototype.updateTextNode_ = function updateTextNode_() {
            if (this.textNode_) {
                this.contentEl_.removeChild(this.textNode_);
            }
            this.textNode_ = document_1.createTextNode(' ' + (this.formattedTime_ || '0:00'));
            this.contentEl_.appendChild(this.textNode_);
        };

        /**
         * Update current time display
         *
         * @param {EventTarget~Event} [event]
         *        The `timeupdate` event that caused this function to run.
         *
         * @listens Player#timeupdate
         */


        CurrentTimeDisplay.prototype.updateContent = function updateContent(event) {
            // Allows for smooth scrubbing, when player can't keep up.
            var time = this.player_.scrubbing() ? this.player_.getCache().currentTime : this.player_.currentTime();
            var formattedTime = formatTime(time, this.player_.duration());

            if (formattedTime !== this.formattedTime_) {
                this.formattedTime_ = formattedTime;
                this.requestAnimationFrame(this.updateTextNode_);
            }
        };

        return CurrentTimeDisplay;
    }(Component);

    Component.registerComponent('CurrentTimeDisplay', CurrentTimeDisplay);

    /**
     * @file duration-display.js
     */
    /**
     * Displays the duration
     *
     * @extends Component
     */

    var DurationDisplay = function (_Component) {
        inherits(DurationDisplay, _Component);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         */
        function DurationDisplay(player, options) {
            classCallCheck(this, DurationDisplay);

            var _this = possibleConstructorReturn(this, _Component.call(this, player, options));

            _this.throttledUpdateContent = throttle(bind(_this, _this.updateContent), 25);

            _this.on(player, ['durationchange',

                // Also listen for timeupdate and loadedmetadata because removing those
                // listeners could have broken dependent applications/libraries. These
                // can likely be removed for 7.0.
                'loadedmetadata', 'timeupdate'], _this.throttledUpdateContent);
            return _this;
        }

        /**
         * Create the `Component`'s DOM element
         *
         * @return {Element}
         *         The element that was created.
         */


        DurationDisplay.prototype.createEl = function createEl$$1() {
            var el = _Component.prototype.createEl.call(this, 'div', {
                className: 'vjs-duration vjs-time-control vjs-control'
            });

            this.contentEl_ = createEl('div', {
                className: 'vjs-duration-display'
            }, {
                // tell screen readers not to automatically read the time as it changes
                'aria-live': 'off'
            }, createEl('span', {
                className: 'vjs-control-text',
                textContent: this.localize('Duration Time')
            }));

            this.updateTextNode_();
            el.appendChild(this.contentEl_);
            return el;
        };

        /**
         * Updates the "current time" text node with new content using the
         * contents of the `formattedTime_` property.
         *
         * @private
         */


        DurationDisplay.prototype.updateTextNode_ = function updateTextNode_() {
            if (this.textNode_) {
                this.contentEl_.removeChild(this.textNode_);
            }
            this.textNode_ = document_1.createTextNode(' ' + (this.formattedTime_ || '0:00'));
            this.contentEl_.appendChild(this.textNode_);
        };

        /**
         * Update duration time display.
         *
         * @param {EventTarget~Event} [event]
         *        The `durationchange`, `timeupdate`, or `loadedmetadata` event that caused
         *        this function to be called.
         *
         * @listens Player#durationchange
         * @listens Player#timeupdate
         * @listens Player#loadedmetadata
         */


        DurationDisplay.prototype.updateContent = function updateContent(event) {
            var duration = this.player_.duration();

            if (duration && this.duration_ !== duration) {
                this.duration_ = duration;
                this.formattedTime_ = formatTime(duration);
                this.requestAnimationFrame(this.updateTextNode_);
            }
        };

        return DurationDisplay;
    }(Component);

    Component.registerComponent('DurationDisplay', DurationDisplay);

    /**
     * @file time-divider.js
     */
    /**
     * The separator between the current time and duration.
     * Can be hidden if it's not needed in the design.
     *
     * @extends Component
     */

    var TimeDivider = function (_Component) {
        inherits(TimeDivider, _Component);

        function TimeDivider() {
            classCallCheck(this, TimeDivider);
            return possibleConstructorReturn(this, _Component.apply(this, arguments));
        }

        /**
         * Create the component's DOM element
         *
         * @return {Element}
         *         The element that was created.
         */
        TimeDivider.prototype.createEl = function createEl() {
            return _Component.prototype.createEl.call(this, 'div', {
                className: 'vjs-time-control vjs-time-divider',
                innerHTML: '<div><span>/</span></div>'
            });
        };

        return TimeDivider;
    }(Component);

    Component.registerComponent('TimeDivider', TimeDivider);

    /**
     * @file remaining-time-display.js
     */
    /**
     * Displays the time left in the video
     *
     * @extends Component
     */

    var RemainingTimeDisplay = function (_Component) {
        inherits(RemainingTimeDisplay, _Component);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         */
        function RemainingTimeDisplay(player, options) {
            classCallCheck(this, RemainingTimeDisplay);

            var _this = possibleConstructorReturn(this, _Component.call(this, player, options));

            _this.throttledUpdateContent = throttle(bind(_this, _this.updateContent), 25);
            _this.on(player, ['timeupdate', 'durationchange'], _this.throttledUpdateContent);
            return _this;
        }

        /**
         * Create the `Component`'s DOM element
         *
         * @return {Element}
         *         The element that was created.
         */


        RemainingTimeDisplay.prototype.createEl = function createEl$$1() {
            var el = _Component.prototype.createEl.call(this, 'div', {
                className: 'vjs-remaining-time vjs-time-control vjs-control'
            });

            this.contentEl_ = createEl('div', {
                className: 'vjs-remaining-time-display'
            }, {
                // tell screen readers not to automatically read the time as it changes
                'aria-live': 'off'
            }, createEl('span', {
                className: 'vjs-control-text',
                textContent: this.localize('Remaining Time')
            }));

            this.updateTextNode_();
            el.appendChild(this.contentEl_);
            return el;
        };

        /**
         * Updates the "remaining time" text node with new content using the
         * contents of the `formattedTime_` property.
         *
         * @private
         */


        RemainingTimeDisplay.prototype.updateTextNode_ = function updateTextNode_() {
            if (this.textNode_) {
                this.contentEl_.removeChild(this.textNode_);
            }
            this.textNode_ = document_1.createTextNode(' -' + (this.formattedTime_ || '0:00'));
            this.contentEl_.appendChild(this.textNode_);
        };

        /**
         * Update remaining time display.
         *
         * @param {EventTarget~Event} [event]
         *        The `timeupdate` or `durationchange` event that caused this to run.
         *
         * @listens Player#timeupdate
         * @listens Player#durationchange
         */


        RemainingTimeDisplay.prototype.updateContent = function updateContent(event) {
            if (this.player_.duration()) {
                var formattedTime = formatTime(this.player_.remainingTime());

                if (formattedTime !== this.formattedTime_) {
                    this.formattedTime_ = formattedTime;
                    this.requestAnimationFrame(this.updateTextNode_);
                }
            }
        };

        return RemainingTimeDisplay;
    }(Component);

    Component.registerComponent('RemainingTimeDisplay', RemainingTimeDisplay);

    /**
     * @file live-display.js
     */
// TODO - Future make it click to snap to live

    /**
     * Displays the live indicator when duration is Infinity.
     *
     * @extends Component
     */

    var LiveDisplay = function (_Component) {
        inherits(LiveDisplay, _Component);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         */
        function LiveDisplay(player, options) {
            classCallCheck(this, LiveDisplay);

            var _this = possibleConstructorReturn(this, _Component.call(this, player, options));

            _this.updateShowing();
            _this.on(_this.player(), 'durationchange', _this.updateShowing);
            return _this;
        }

        /**
         * Create the `Component`'s DOM element
         *
         * @return {Element}
         *         The element that was created.
         */


        LiveDisplay.prototype.createEl = function createEl$$1() {
            var el = _Component.prototype.createEl.call(this, 'div', {
                className: 'vjs-live-control vjs-control'
            });

            this.contentEl_ = createEl('div', {
                className: 'vjs-live-display',
                innerHTML: '<span class="vjs-control-text">' + this.localize('Stream Type') + '</span>' + this.localize('LIVE')
            }, {
                'aria-live': 'off'
            });

            el.appendChild(this.contentEl_);
            return el;
        };

        /**
         * Check the duration to see if the LiveDisplay should be showing or not. Then show/hide
         * it accordingly
         *
         * @param {EventTarget~Event} [event]
         *        The {@link Player#durationchange} event that caused this function to run.
         *
         * @listens Player#durationchange
         */


        LiveDisplay.prototype.updateShowing = function updateShowing(event) {
            if (this.player().duration() === Infinity) {
                this.show();
            } else {
                this.hide();
            }
        };

        return LiveDisplay;
    }(Component);

    Component.registerComponent('LiveDisplay', LiveDisplay);

    /**
     * @file slider.js
     */
    /**
     * The base functionality for a slider. Can be vertical or horizontal.
     * For instance the volume bar or the seek bar on a video is a slider.
     *
     * @extends Component
     */

    var Slider = function (_Component) {
        inherits(Slider, _Component);

        /**
         * Create an instance of this class
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         */
        function Slider(player, options) {
            classCallCheck(this, Slider);

            // Set property names to bar to match with the child Slider class is looking for
            var _this = possibleConstructorReturn(this, _Component.call(this, player, options));

            _this.bar = _this.getChild(_this.options_.barName);

            // Set a horizontal or vertical class on the slider depending on the slider type
            _this.vertical(!!_this.options_.vertical);

            _this.on('mousedown', _this.handleMouseDown);
            _this.on('touchstart', _this.handleMouseDown);
            _this.on('focus', _this.handleFocus);
            _this.on('blur', _this.handleBlur);
            _this.on('click', _this.handleClick);

            _this.on(player, 'controlsvisible', _this.update);

            if (_this.playerEvent) {
                _this.on(player, _this.playerEvent, _this.update);
            }
            return _this;
        }

        /**
         * Create the `Button`s DOM element.
         *
         * @param {string} type
         *        Type of element to create.
         *
         * @param {Object} [props={}]
         *        List of properties in Object form.
         *
         * @param {Object} [attributes={}]
         *        list of attributes in Object form.
         *
         * @return {Element}
         *         The element that gets created.
         */


        Slider.prototype.createEl = function createEl$$1(type) {
            var props = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
            var attributes = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};

            // Add the slider element class to all sub classes
            props.className = props.className + ' vjs-slider';
            props = assign({
                tabIndex: 0
            }, props);

            attributes = assign({
                'role': 'slider',
                'aria-valuenow': 0,
                'aria-valuemin': 0,
                'aria-valuemax': 100,
                'tabIndex': 0
            }, attributes);

            return _Component.prototype.createEl.call(this, type, props, attributes);
        };

        /**
         * Handle `mousedown` or `touchstart` events on the `Slider`.
         *
         * @param {EventTarget~Event} event
         *        `mousedown` or `touchstart` event that triggered this function
         *
         * @listens mousedown
         * @listens touchstart
         * @fires Slider#slideractive
         */


        Slider.prototype.handleMouseDown = function handleMouseDown(event) {
            var doc = this.bar.el_.ownerDocument;

            event.preventDefault();
            blockTextSelection();

            this.addClass('vjs-sliding');
            /**
             * Triggered when the slider is in an active state
             *
             * @event Slider#slideractive
             * @type {EventTarget~Event}
             */
            this.trigger('slideractive');

            this.on(doc, 'mousemove', this.handleMouseMove);
            this.on(doc, 'mouseup', this.handleMouseUp);
            this.on(doc, 'touchmove', this.handleMouseMove);
            this.on(doc, 'touchend', this.handleMouseUp);

            this.handleMouseMove(event);
        };

        /**
         * Handle the `mousemove`, `touchmove`, and `mousedown` events on this `Slider`.
         * The `mousemove` and `touchmove` events will only only trigger this function during
         * `mousedown` and `touchstart`. This is due to {@link Slider#handleMouseDown} and
         * {@link Slider#handleMouseUp}.
         *
         * @param {EventTarget~Event} event
         *        `mousedown`, `mousemove`, `touchstart`, or `touchmove` event that triggered
         *        this function
         *
         * @listens mousemove
         * @listens touchmove
         */


        Slider.prototype.handleMouseMove = function handleMouseMove(event) {};

        /**
         * Handle `mouseup` or `touchend` events on the `Slider`.
         *
         * @param {EventTarget~Event} event
         *        `mouseup` or `touchend` event that triggered this function.
         *
         * @listens touchend
         * @listens mouseup
         * @fires Slider#sliderinactive
         */


        Slider.prototype.handleMouseUp = function handleMouseUp() {
            var doc = this.bar.el_.ownerDocument;

            unblockTextSelection();

            this.removeClass('vjs-sliding');
            /**
             * Triggered when the slider is no longer in an active state.
             *
             * @event Slider#sliderinactive
             * @type {EventTarget~Event}
             */
            this.trigger('sliderinactive');

            this.off(doc, 'mousemove', this.handleMouseMove);
            this.off(doc, 'mouseup', this.handleMouseUp);
            this.off(doc, 'touchmove', this.handleMouseMove);
            this.off(doc, 'touchend', this.handleMouseUp);

            this.update();
        };

        /**
         * Update the progress bar of the `Slider`.
         *
         * @returns {number}
         *          The percentage of progress the progress bar represents as a
         *          number from 0 to 1.
         */


        Slider.prototype.update = function update() {

            // In VolumeBar init we have a setTimeout for update that pops and update
            // to the end of the execution stack. The player is destroyed before then
            // update will cause an error
            if (!this.el_) {
                return;
            }

            // If scrubbing, we could use a cached value to make the handle keep up
            // with the user's mouse. On HTML5 browsers scrubbing is really smooth, but
            // some flash players are slow, so we might want to utilize this later.
            // var progress =  (this.player_.scrubbing()) ? this.player_.getCache().currentTime / this.player_.duration() : this.player_.currentTime() / this.player_.duration();
            var progress = this.getPercent();
            var bar = this.bar;

            // If there's no bar...
            if (!bar) {
                return;
            }

            // Protect against no duration and other division issues
            if (typeof progress !== 'number' || progress !== progress || progress < 0 || progress === Infinity) {
                progress = 0;
            }

            // Convert to a percentage for setting
            var percentage = (progress * 100).toFixed(2) + '%';
            var style = bar.el().style;

            // Set the new bar width or height
            if (this.vertical()) {
                style.height = percentage;
            } else {
                style.width = percentage;
            }

            return progress;
        };

        /**
         * Calculate distance for slider
         *
         * @param {EventTarget~Event} event
         *        The event that caused this function to run.
         *
         * @return {number}
         *         The current position of the Slider.
         *         - postition.x for vertical `Slider`s
         *         - postition.y for horizontal `Slider`s
         */


        Slider.prototype.calculateDistance = function calculateDistance(event) {
            var position = getPointerPosition(this.el_, event);

            if (this.vertical()) {
                return position.y;
            }
            return position.x;
        };

        /**
         * Handle a `focus` event on this `Slider`.
         *
         * @param {EventTarget~Event} event
         *        The `focus` event that caused this function to run.
         *
         * @listens focus
         */


        Slider.prototype.handleFocus = function handleFocus() {
            this.on(this.bar.el_.ownerDocument, 'keydown', this.handleKeyPress);
        };

        /**
         * Handle a `keydown` event on the `Slider`. Watches for left, rigth, up, and down
         * arrow keys. This function will only be called when the slider has focus. See
         * {@link Slider#handleFocus} and {@link Slider#handleBlur}.
         *
         * @param {EventTarget~Event} event
         *        the `keydown` event that caused this function to run.
         *
         * @listens keydown
         */


        Slider.prototype.handleKeyPress = function handleKeyPress(event) {
            // Left and Down Arrows
            if (event.which === 37 || event.which === 40) {
                event.preventDefault();
                this.stepBack();

                // Up and Right Arrows
            } else if (event.which === 38 || event.which === 39) {
                event.preventDefault();
                this.stepForward();
            }
        };

        /**
         * Handle a `blur` event on this `Slider`.
         *
         * @param {EventTarget~Event} event
         *        The `blur` event that caused this function to run.
         *
         * @listens blur
         */

        Slider.prototype.handleBlur = function handleBlur() {
            this.off(this.bar.el_.ownerDocument, 'keydown', this.handleKeyPress);
        };

        /**
         * Listener for click events on slider, used to prevent clicks
         *   from bubbling up to parent elements like button menus.
         *
         * @param {Object} event
         *        Event that caused this object to run
         */


        Slider.prototype.handleClick = function handleClick(event) {
            event.stopImmediatePropagation();
            event.preventDefault();
        };

        /**
         * Get/set if slider is horizontal for vertical
         *
         * @param {boolean} [bool]
         *        - true if slider is vertical,
         *        - false is horizontal
         *
         * @return {boolean}
         *         - true if slider is vertical, and getting
         *         - false if the slider is horizontal, and getting
         */


        Slider.prototype.vertical = function vertical(bool) {
            if (bool === undefined) {
                return this.vertical_ || false;
            }

            this.vertical_ = !!bool;

            if (this.vertical_) {
                this.addClass('vjs-slider-vertical');
            } else {
                this.addClass('vjs-slider-horizontal');
            }
        };

        return Slider;
    }(Component);

    Component.registerComponent('Slider', Slider);

    /**
     * @file load-progress-bar.js
     */
    /**
     * Shows loading progress
     *
     * @extends Component
     */

    var LoadProgressBar = function (_Component) {
        inherits(LoadProgressBar, _Component);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         */
        function LoadProgressBar(player, options) {
            classCallCheck(this, LoadProgressBar);

            var _this = possibleConstructorReturn(this, _Component.call(this, player, options));

            _this.partEls_ = [];
            _this.on(player, 'progress', _this.update);
            return _this;
        }

        /**
         * Create the `Component`'s DOM element
         *
         * @return {Element}
         *         The element that was created.
         */


        LoadProgressBar.prototype.createEl = function createEl$$1() {
            return _Component.prototype.createEl.call(this, 'div', {
                className: 'vjs-load-progress',
                innerHTML: '<span class="vjs-control-text"><span>' + this.localize('Loaded') + '</span>: 0%</span>'
            });
        };

        /**
         * Update progress bar
         *
         * @param {EventTarget~Event} [event]
         *        The `progress` event that caused this function to run.
         *
         * @listens Player#progress
         */


        LoadProgressBar.prototype.update = function update(event) {
            var buffered = this.player_.buffered();
            var duration = this.player_.duration();
            var bufferedEnd = this.player_.bufferedEnd();
            var children = this.partEls_;

            // get the percent width of a time compared to the total end
            var percentify = function percentify(time, end) {
                // no NaN
                var percent = time / end || 0;

                return (percent >= 1 ? 1 : percent) * 100 + '%';
            };

            // update the width of the progress bar
            this.el_.style.width = percentify(bufferedEnd, duration);

            // add child elements to represent the individual buffered time ranges
            for (var i = 0; i < buffered.length; i++) {
                var start = buffered.start(i);
                var end = buffered.end(i);
                var part = children[i];

                if (!part) {
                    part = this.el_.appendChild(createEl());
                    children[i] = part;
                }

                // set the percent based on the width of the progress bar (bufferedEnd)
                part.style.left = percentify(start, bufferedEnd);
                part.style.width = percentify(end - start, bufferedEnd);
            }

            // remove unused buffered range elements
            for (var _i = children.length; _i > buffered.length; _i--) {
                this.el_.removeChild(children[_i - 1]);
            }
            children.length = buffered.length;
        };

        return LoadProgressBar;
    }(Component);

    Component.registerComponent('LoadProgressBar', LoadProgressBar);

    /**
     * @file time-tooltip.js
     */
    /**
     * Time tooltips display a time above the progress bar.
     *
     * @extends Component
     */

    var TimeTooltip = function (_Component) {
        inherits(TimeTooltip, _Component);

        function TimeTooltip() {
            classCallCheck(this, TimeTooltip);
            return possibleConstructorReturn(this, _Component.apply(this, arguments));
        }

        /**
         * Create the time tooltip DOM element
         *
         * @return {Element}
         *         The element that was created.
         */
        TimeTooltip.prototype.createEl = function createEl$$1() {
            return _Component.prototype.createEl.call(this, 'div', {
                className: 'vjs-time-tooltip'
            });
        };

        /**
         * Updates the position of the time tooltip relative to the `SeekBar`.
         *
         * @param {Object} seekBarRect
         *        The `ClientRect` for the {@link SeekBar} element.
         *
         * @param {number} seekBarPoint
         *        A number from 0 to 1, representing a horizontal reference point
         *        from the left edge of the {@link SeekBar}
         */


        TimeTooltip.prototype.update = function update(seekBarRect, seekBarPoint, content) {
            var tooltipRect = getBoundingClientRect(this.el_);
            var playerRect = getBoundingClientRect(this.player_.el());
            var seekBarPointPx = seekBarRect.width * seekBarPoint;

            // do nothing if either rect isn't available
            // for example, if the player isn't in the DOM for testing
            if (!playerRect || !tooltipRect) {
                return;
            }

            // This is the space left of the `seekBarPoint` available within the bounds
            // of the player. We calculate any gap between the left edge of the player
            // and the left edge of the `SeekBar` and add the number of pixels in the
            // `SeekBar` before hitting the `seekBarPoint`
            var spaceLeftOfPoint = seekBarRect.left - playerRect.left + seekBarPointPx;

            // This is the space right of the `seekBarPoint` available within the bounds
            // of the player. We calculate the number of pixels from the `seekBarPoint`
            // to the right edge of the `SeekBar` and add to that any gap between the
            // right edge of the `SeekBar` and the player.
            var spaceRightOfPoint = seekBarRect.width - seekBarPointPx + (playerRect.right - seekBarRect.right);

            // This is the number of pixels by which the tooltip will need to be pulled
            // further to the right to center it over the `seekBarPoint`.
            var pullTooltipBy = tooltipRect.width / 2;

            // Adjust the `pullTooltipBy` distance to the left or right depending on
            // the results of the space calculations above.
            if (spaceLeftOfPoint < pullTooltipBy) {
                pullTooltipBy += pullTooltipBy - spaceLeftOfPoint;
            } else if (spaceRightOfPoint < pullTooltipBy) {
                pullTooltipBy = spaceRightOfPoint;
            }

            // Due to the imprecision of decimal/ratio based calculations and varying
            // rounding behaviors, there are cases where the spacing adjustment is off
            // by a pixel or two. This adds insurance to these calculations.
            if (pullTooltipBy < 0) {
                pullTooltipBy = 0;
            } else if (pullTooltipBy > tooltipRect.width) {
                pullTooltipBy = tooltipRect.width;
            }

            this.el_.style.right = '-' + pullTooltipBy + 'px';
            textContent(this.el_, content);
        };

        return TimeTooltip;
    }(Component);

    Component.registerComponent('TimeTooltip', TimeTooltip);

    /**
     * @file play-progress-bar.js
     */
    /**
     * Used by {@link SeekBar} to display media playback progress as part of the
     * {@link ProgressControl}.
     *
     * @extends Component
     */

    var PlayProgressBar = function (_Component) {
        inherits(PlayProgressBar, _Component);

        function PlayProgressBar() {
            classCallCheck(this, PlayProgressBar);
            return possibleConstructorReturn(this, _Component.apply(this, arguments));
        }

        /**
         * Create the the DOM element for this class.
         *
         * @return {Element}
         *         The element that was created.
         */
        PlayProgressBar.prototype.createEl = function createEl() {
            return _Component.prototype.createEl.call(this, 'div', {
                className: 'vjs-play-progress vjs-slider-bar',
                innerHTML: '<span class="vjs-control-text"><span>' + this.localize('Progress') + '</span>: 0%</span>'
            });
        };

        /**
         * Enqueues updates to its own DOM as well as the DOM of its
         * {@link TimeTooltip} child.
         *
         * @param {Object} seekBarRect
         *        The `ClientRect` for the {@link SeekBar} element.
         *
         * @param {number} seekBarPoint
         *        A number from 0 to 1, representing a horizontal reference point
         *        from the left edge of the {@link SeekBar}
         */


        PlayProgressBar.prototype.update = function update(seekBarRect, seekBarPoint) {
            var _this2 = this;

            // If there is an existing rAF ID, cancel it so we don't over-queue.
            if (this.rafId_) {
                this.cancelAnimationFrame(this.rafId_);
            }

            this.rafId_ = this.requestAnimationFrame(function () {
                var time = _this2.player_.scrubbing() ? _this2.player_.getCache().currentTime : _this2.player_.currentTime();

                var content = formatTime(time, _this2.player_.duration());
                var timeTooltip = _this2.getChild('timeTooltip');

                if (timeTooltip) {
                    timeTooltip.update(seekBarRect, seekBarPoint, content);
                }
            });
        };

        return PlayProgressBar;
    }(Component);

    /**
     * Default options for {@link PlayProgressBar}.
     *
     * @type {Object}
     * @private
     */


    PlayProgressBar.prototype.options_ = {
        children: []
    };

// Time tooltips should not be added to a player on mobile devices or IE8
    if ((!IE_VERSION || IE_VERSION > 8) && !IS_IOS && !IS_ANDROID) {
        PlayProgressBar.prototype.options_.children.push('timeTooltip');
    }

    Component.registerComponent('PlayProgressBar', PlayProgressBar);

    /**
     * @file mouse-time-display.js
     */
    /**
     * The {@link MouseTimeDisplay} component tracks mouse movement over the
     * {@link ProgressControl}. It displays an indicator and a {@link TimeTooltip}
     * indicating the time which is represented by a given point in the
     * {@link ProgressControl}.
     *
     * @extends Component
     */

    var MouseTimeDisplay = function (_Component) {
        inherits(MouseTimeDisplay, _Component);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The {@link Player} that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         */
        function MouseTimeDisplay(player, options) {
            classCallCheck(this, MouseTimeDisplay);

            var _this = possibleConstructorReturn(this, _Component.call(this, player, options));

            _this.update = throttle(bind(_this, _this.update), 25);
            return _this;
        }

        /**
         * Create the DOM element for this class.
         *
         * @return {Element}
         *         The element that was created.
         */


        MouseTimeDisplay.prototype.createEl = function createEl() {
            return _Component.prototype.createEl.call(this, 'div', {
                className: 'vjs-mouse-display'
            });
        };

        /**
         * Enqueues updates to its own DOM as well as the DOM of its
         * {@link TimeTooltip} child.
         *
         * @param {Object} seekBarRect
         *        The `ClientRect` for the {@link SeekBar} element.
         *
         * @param {number} seekBarPoint
         *        A number from 0 to 1, representing a horizontal reference point
         *        from the left edge of the {@link SeekBar}
         */


        MouseTimeDisplay.prototype.update = function update(seekBarRect, seekBarPoint) {
            var _this2 = this;

            // If there is an existing rAF ID, cancel it so we don't over-queue.
            if (this.rafId_) {
                this.cancelAnimationFrame(this.rafId_);
            }

            this.rafId_ = this.requestAnimationFrame(function () {
                var duration = _this2.player_.duration();
                var content = formatTime(seekBarPoint * duration, duration);

                _this2.el_.style.left = seekBarRect.width * seekBarPoint + 'px';
                _this2.getChild('timeTooltip').update(seekBarRect, seekBarPoint, content);
            });
        };

        return MouseTimeDisplay;
    }(Component);

    /**
     * Default options for `MouseTimeDisplay`
     *
     * @type {Object}
     * @private
     */


    MouseTimeDisplay.prototype.options_ = {
        children: ['timeTooltip']
    };

    Component.registerComponent('MouseTimeDisplay', MouseTimeDisplay);

    /**
     * @file seek-bar.js
     */
// The number of seconds the `step*` functions move the timeline.
    var STEP_SECONDS = 5;

    /**
     * Seek bar and container for the progress bars. Uses {@link PlayProgressBar}
     * as its `bar`.
     *
     * @extends Slider
     */

    var SeekBar = function (_Slider) {
        inherits(SeekBar, _Slider);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         */
        function SeekBar(player, options) {
            classCallCheck(this, SeekBar);

            var _this = possibleConstructorReturn(this, _Slider.call(this, player, options));

            _this.update = throttle(bind(_this, _this.update), 50);
            _this.on(player, ['timeupdate', 'ended'], _this.update);
            return _this;
        }

        /**
         * Create the `Component`'s DOM element
         *
         * @return {Element}
         *         The element that was created.
         */


        SeekBar.prototype.createEl = function createEl$$1() {
            return _Slider.prototype.createEl.call(this, 'div', {
                className: 'vjs-progress-holder'
            }, {
                'aria-label': this.localize('Progress Bar')
            });
        };

        /**
         * Update the seek bar's UI.
         *
         * @param {EventTarget~Event} [event]
         *        The `timeupdate` or `ended` event that caused this to run.
         *
         * @listens Player#timeupdate
         * @listens Player#ended
         */


        SeekBar.prototype.update = function update() {
            var percent = _Slider.prototype.update.call(this);
            var duration = this.player_.duration();

            // Allows for smooth scrubbing, when player can't keep up.
            var time = this.player_.scrubbing() ? this.player_.getCache().currentTime : this.player_.currentTime();

            // machine readable value of progress bar (percentage complete)
            this.el_.setAttribute('aria-valuenow', (percent * 100).toFixed(2));

            // human readable value of progress bar (time complete)
            this.el_.setAttribute('aria-valuetext', this.localize('progress bar timing: currentTime={1} duration={2}', [formatTime(time, duration), formatTime(duration, duration)], '{1} of {2}'));

            // Update the `PlayProgressBar`.
            this.bar.update(getBoundingClientRect(this.el_), percent);

            return percent;
        };

        /**
         * Get the percentage of media played so far.
         *
         * @return {number}
         *         The percentage of media played so far (0 to 1).
         */


        SeekBar.prototype.getPercent = function getPercent() {

            // Allows for smooth scrubbing, when player can't keep up.
            var time = this.player_.scrubbing() ? this.player_.getCache().currentTime : this.player_.currentTime();

            var percent = time / this.player_.duration();

            return percent >= 1 ? 1 : percent;
        };

        /**
         * Handle mouse down on seek bar
         *
         * @param {EventTarget~Event} event
         *        The `mousedown` event that caused this to run.
         *
         * @listens mousedown
         */


        SeekBar.prototype.handleMouseDown = function handleMouseDown(event) {
            this.player_.scrubbing(true);

            this.videoWasPlaying = !this.player_.paused();
            this.player_.pause();

            _Slider.prototype.handleMouseDown.call(this, event);
        };

        /**
         * Handle mouse move on seek bar
         *
         * @param {EventTarget~Event} event
         *        The `mousemove` event that caused this to run.
         *
         * @listens mousemove
         */


        SeekBar.prototype.handleMouseMove = function handleMouseMove(event) {
            var newTime = this.calculateDistance(event) * this.player_.duration();

            // Don't let video end while scrubbing.
            if (newTime === this.player_.duration()) {
                newTime = newTime - 0.1;
            }

            // Set new time (tell player to seek to new time)
            this.player_.currentTime(newTime);
        };

        /**
         * Handle mouse up on seek bar
         *
         * @param {EventTarget~Event} event
         *        The `mouseup` event that caused this to run.
         *
         * @listens mouseup
         */


        SeekBar.prototype.handleMouseUp = function handleMouseUp(event) {
            _Slider.prototype.handleMouseUp.call(this, event);

            this.player_.scrubbing(false);
            if (this.videoWasPlaying) {
                this.player_.play();
            }
        };

        /**
         * Move more quickly fast forward for keyboard-only users
         */


        SeekBar.prototype.stepForward = function stepForward() {
            this.player_.currentTime(this.player_.currentTime() + STEP_SECONDS);
        };

        /**
         * Move more quickly rewind for keyboard-only users
         */


        SeekBar.prototype.stepBack = function stepBack() {
            this.player_.currentTime(this.player_.currentTime() - STEP_SECONDS);
        };

        /**
         * Toggles the playback state of the player
         * This gets called when enter or space is used on the seekbar
         *
         * @param {EventTarget~Event} event
         *        The `keydown` event that caused this function to be called
         *
         */


        SeekBar.prototype.handleAction = function handleAction(event) {
            if (this.player_.paused()) {
                this.player_.play();
            } else {
                this.player_.pause();
            }
        };

        /**
         * Called when this SeekBar has focus and a key gets pressed down. By
         * default it will call `this.handleAction` when the key is space or enter.
         *
         * @param {EventTarget~Event} event
         *        The `keydown` event that caused this function to be called.
         *
         * @listens keydown
         */


        SeekBar.prototype.handleKeyPress = function handleKeyPress(event) {

            // Support Space (32) or Enter (13) key operation to fire a click event
            if (event.which === 32 || event.which === 13) {
                event.preventDefault();
                this.handleAction(event);
            } else if (_Slider.prototype.handleKeyPress) {

                // Pass keypress handling up for unsupported keys
                _Slider.prototype.handleKeyPress.call(this, event);
            }
        };

        return SeekBar;
    }(Slider);

    /**
     * Default options for the `SeekBar`
     *
     * @type {Object}
     * @private
     */


    SeekBar.prototype.options_ = {
        children: ['loadProgressBar', 'playProgressBar'],
        barName: 'playProgressBar'
    };

// MouseTimeDisplay tooltips should not be added to a player on mobile devices or IE8
    if ((!IE_VERSION || IE_VERSION > 8) && !IS_IOS && !IS_ANDROID) {
        SeekBar.prototype.options_.children.splice(1, 0, 'mouseTimeDisplay');
    }

    /**
     * Call the update event for this Slider when this event happens on the player.
     *
     * @type {string}
     */
    SeekBar.prototype.playerEvent = 'timeupdate';

    Component.registerComponent('SeekBar', SeekBar);

    /**
     * @file progress-control.js
     */
    /**
     * The Progress Control component contains the seek bar, load progress,
     * and play progress.
     *
     * @extends Component
     */

    var ProgressControl = function (_Component) {
        inherits(ProgressControl, _Component);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         */
        function ProgressControl(player, options) {
            classCallCheck(this, ProgressControl);

            var _this = possibleConstructorReturn(this, _Component.call(this, player, options));

            _this.handleMouseMove = throttle(bind(_this, _this.handleMouseMove), 25);
            _this.on(_this.el_, 'mousemove', _this.handleMouseMove);

            _this.throttledHandleMouseSeek = throttle(bind(_this, _this.handleMouseSeek), 25);
            _this.on(['mousedown', 'touchstart'], _this.handleMouseDown);
            return _this;
        }

        /**
         * Create the `Component`'s DOM element
         *
         * @return {Element}
         *         The element that was created.
         */


        ProgressControl.prototype.createEl = function createEl$$1() {
            return _Component.prototype.createEl.call(this, 'div', {
                className: 'vjs-progress-control vjs-control'
            });
        };

        /**
         * When the mouse moves over the `ProgressControl`, the pointer position
         * gets passed down to the `MouseTimeDisplay` component.
         *
         * @param {EventTarget~Event} event
         *        The `mousemove` event that caused this function to run.
         *
         * @listen mousemove
         */


        ProgressControl.prototype.handleMouseMove = function handleMouseMove(event) {
            var seekBar = this.getChild('seekBar');
            var mouseTimeDisplay = seekBar.getChild('mouseTimeDisplay');
            var seekBarEl = seekBar.el();
            var seekBarRect = getBoundingClientRect(seekBarEl);
            var seekBarPoint = getPointerPosition(seekBarEl, event).x;

            // The default skin has a gap on either side of the `SeekBar`. This means
            // that it's possible to trigger this behavior outside the boundaries of
            // the `SeekBar`. This ensures we stay within it at all times.
            if (seekBarPoint > 1) {
                seekBarPoint = 1;
            } else if (seekBarPoint < 0) {
                seekBarPoint = 0;
            }

            if (mouseTimeDisplay) {
                mouseTimeDisplay.update(seekBarRect, seekBarPoint);
            }
        };

        /**
         * A throttled version of the {@link ProgressControl#handleMouseSeek} listener.
         *
         * @method ProgressControl#throttledHandleMouseSeek
         * @param {EventTarget~Event} event
         *        The `mousemove` event that caused this function to run.
         *
         * @listen mousemove
         * @listen touchmove
         */

        /**
         * Handle `mousemove` or `touchmove` events on the `ProgressControl`.
         *
         * @param {EventTarget~Event} event
         *        `mousedown` or `touchstart` event that triggered this function
         *
         * @listens mousemove
         * @listens touchmove
         */


        ProgressControl.prototype.handleMouseSeek = function handleMouseSeek(event) {
            var seekBar = this.getChild('seekBar');

            seekBar.handleMouseMove(event);
        };

        /**
         * Handle `mousedown` or `touchstart` events on the `ProgressControl`.
         *
         * @param {EventTarget~Event} event
         *        `mousedown` or `touchstart` event that triggered this function
         *
         * @listens mousedown
         * @listens touchstart
         */


        ProgressControl.prototype.handleMouseDown = function handleMouseDown(event) {
            var doc = this.el_.ownerDocument;

            this.on(doc, 'mousemove', this.throttledHandleMouseSeek);
            this.on(doc, 'touchmove', this.throttledHandleMouseSeek);
            this.on(doc, 'mouseup', this.handleMouseUp);
            this.on(doc, 'touchend', this.handleMouseUp);
        };

        /**
         * Handle `mouseup` or `touchend` events on the `ProgressControl`.
         *
         * @param {EventTarget~Event} event
         *        `mouseup` or `touchend` event that triggered this function.
         *
         * @listens touchend
         * @listens mouseup
         */


        ProgressControl.prototype.handleMouseUp = function handleMouseUp(event) {
            var doc = this.el_.ownerDocument;

            this.off(doc, 'mousemove', this.throttledHandleMouseSeek);
            this.off(doc, 'touchmove', this.throttledHandleMouseSeek);
            this.off(doc, 'mouseup', this.handleMouseUp);
            this.off(doc, 'touchend', this.handleMouseUp);
        };

        return ProgressControl;
    }(Component);

    /**
     * Default options for `ProgressControl`
     *
     * @type {Object}
     * @private
     */


    ProgressControl.prototype.options_ = {
        children: ['seekBar']
    };

    Component.registerComponent('ProgressControl', ProgressControl);

    /**
     * @file fullscreen-toggle.js
     */
    /**
     * Toggle fullscreen video
     *
     * @extends Button
     */

    var FullscreenToggle = function (_Button) {
        inherits(FullscreenToggle, _Button);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         */
        function FullscreenToggle(player, options) {
            classCallCheck(this, FullscreenToggle);

            var _this = possibleConstructorReturn(this, _Button.call(this, player, options));

            _this.on(player, 'fullscreenchange', _this.handleFullscreenChange);
            return _this;
        }

        /**
         * Builds the default DOM `className`.
         *
         * @return {string}
         *         The DOM `className` for this object.
         */


        FullscreenToggle.prototype.buildCSSClass = function buildCSSClass() {
            return 'vjs-fullscreen-control ' + _Button.prototype.buildCSSClass.call(this);
        };

        /**
         * Handles fullscreenchange on the player and change control text accordingly.
         *
         * @param {EventTarget~Event} [event]
         *        The {@link Player#fullscreenchange} event that caused this function to be
         *        called.
         *
         * @listens Player#fullscreenchange
         */


        FullscreenToggle.prototype.handleFullscreenChange = function handleFullscreenChange(event) {
            if (this.player_.isFullscreen()) {
                this.controlText('Non-Fullscreen');
            } else {
                this.controlText('Fullscreen');
            }
        };

        /**
         * This gets called when an `FullscreenToggle` is "clicked". See
         * {@link ClickableComponent} for more detailed information on what a click can be.
         *
         * @param {EventTarget~Event} [event]
         *        The `keydown`, `tap`, or `click` event that caused this function to be
         *        called.
         *
         * @listens tap
         * @listens click
         */


        FullscreenToggle.prototype.handleClick = function handleClick(event) {
            if (!this.player_.isFullscreen()) {
                this.player_.requestFullscreen();
            } else {
                this.player_.exitFullscreen();
            }
        };

        return FullscreenToggle;
    }(Button);

    /**
     * The text that should display over the `FullscreenToggle`s controls. Added for localization.
     *
     * @type {string}
     * @private
     */


    FullscreenToggle.prototype.controlText_ = 'Fullscreen';

    Component.registerComponent('FullscreenToggle', FullscreenToggle);

    /**
     * Check if volume control is supported and if it isn't hide the
     * `Component` that was passed  using the `vjs-hidden` class.
     *
     * @param {Component} self
     *        The component that should be hidden if volume is unsupported
     *
     * @param {Player} player
     *        A reference to the player
     *
     * @private
     */
    var checkVolumeSupport = function checkVolumeSupport(self, player) {
        // hide volume controls when they're not supported by the current tech
        if (player.tech_ && !player.tech_.featuresVolumeControl) {
            self.addClass('vjs-hidden');
        }

        self.on(player, 'loadstart', function () {
            if (!player.tech_.featuresVolumeControl) {
                self.addClass('vjs-hidden');
            } else {
                self.removeClass('vjs-hidden');
            }
        });
    };

    /**
     * @file volume-level.js
     */
    /**
     * Shows volume level
     *
     * @extends Component
     */

    var VolumeLevel = function (_Component) {
        inherits(VolumeLevel, _Component);

        function VolumeLevel() {
            classCallCheck(this, VolumeLevel);
            return possibleConstructorReturn(this, _Component.apply(this, arguments));
        }

        /**
         * Create the `Component`'s DOM element
         *
         * @return {Element}
         *         The element that was created.
         */
        VolumeLevel.prototype.createEl = function createEl() {
            return _Component.prototype.createEl.call(this, 'div', {
                className: 'vjs-volume-level',
                innerHTML: '<span class="vjs-control-text"></span>'
            });
        };

        return VolumeLevel;
    }(Component);

    Component.registerComponent('VolumeLevel', VolumeLevel);

    /**
     * @file volume-bar.js
     */
// Required children
    /**
     * The bar that contains the volume level and can be clicked on to adjust the level
     *
     * @extends Slider
     */

    var VolumeBar = function (_Slider) {
        inherits(VolumeBar, _Slider);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         */
        function VolumeBar(player, options) {
            classCallCheck(this, VolumeBar);

            var _this = possibleConstructorReturn(this, _Slider.call(this, player, options));

            _this.on('slideractive', _this.updateLastVolume_);
            _this.on(player, 'volumechange', _this.updateARIAAttributes);
            player.ready(function () {
                return _this.updateARIAAttributes();
            });
            return _this;
        }

        /**
         * Create the `Component`'s DOM element
         *
         * @return {Element}
         *         The element that was created.
         */


        VolumeBar.prototype.createEl = function createEl() {
            return _Slider.prototype.createEl.call(this, 'div', {
                className: 'vjs-volume-bar vjs-slider-bar'
            }, {
                'aria-label': this.localize('Volume Level'),
                'aria-live': 'polite'
            });
        };

        /**
         * Handle movement events on the {@link VolumeMenuButton}.
         *
         * @param {EventTarget~Event} event
         *        The event that caused this function to run.
         *
         * @listens mousemove
         */


        VolumeBar.prototype.handleMouseMove = function handleMouseMove(event) {
            this.checkMuted();
            this.player_.volume(this.calculateDistance(event));
        };

        /**
         * If the player is muted unmute it.
         */


        VolumeBar.prototype.checkMuted = function checkMuted() {
            if (this.player_.muted()) {
                this.player_.muted(false);
            }
        };

        /**
         * Get percent of volume level
         *
         * @return {number}
         *         Volume level percent as a decimal number.
         */


        VolumeBar.prototype.getPercent = function getPercent() {
            if (this.player_.muted()) {
                return 0;
            }
            return this.player_.volume();
        };

        /**
         * Increase volume level for keyboard users
         */


        VolumeBar.prototype.stepForward = function stepForward() {
            this.checkMuted();
            this.player_.volume(this.player_.volume() + 0.1);
        };

        /**
         * Decrease volume level for keyboard users
         */


        VolumeBar.prototype.stepBack = function stepBack() {
            this.checkMuted();
            this.player_.volume(this.player_.volume() - 0.1);
        };

        /**
         * Update ARIA accessibility attributes
         *
         * @param {EventTarget~Event} [event]
         *        The `volumechange` event that caused this function to run.
         *
         * @listens Player#volumechange
         */


        VolumeBar.prototype.updateARIAAttributes = function updateARIAAttributes(event) {
            var ariaValue = this.player_.muted() ? 0 : this.volumeAsPercentage_();

            this.el_.setAttribute('aria-valuenow', ariaValue);
            this.el_.setAttribute('aria-valuetext', ariaValue + '%');
        };

        /**
         * Returns the current value of the player volume as a percentage
         *
         * @private
         */


        VolumeBar.prototype.volumeAsPercentage_ = function volumeAsPercentage_() {
            return Math.round(this.player_.volume() * 100);
        };

        /**
         * When user starts dragging the VolumeBar, store the volume and listen for
         * the end of the drag. When the drag ends, if the volume was set to zero,
         * set lastVolume to the stored volume.
         *
         * @listens slideractive
         * @private
         */


        VolumeBar.prototype.updateLastVolume_ = function updateLastVolume_() {
            var _this2 = this;

            var volumeBeforeDrag = this.player_.volume();

            this.one('sliderinactive', function () {
                if (_this2.player_.volume() === 0) {
                    _this2.player_.lastVolume_(volumeBeforeDrag);
                }
            });
        };

        return VolumeBar;
    }(Slider);

    /**
     * Default options for the `VolumeBar`
     *
     * @type {Object}
     * @private
     */


    VolumeBar.prototype.options_ = {
        children: ['volumeLevel'],
        barName: 'volumeLevel'
    };

    /**
     * Call the update event for this Slider when this event happens on the player.
     *
     * @type {string}
     */
    VolumeBar.prototype.playerEvent = 'volumechange';

    Component.registerComponent('VolumeBar', VolumeBar);

    /**
     * @file volume-control.js
     */
// Required children
    /**
     * The component for controlling the volume level
     *
     * @extends Component
     */

    var VolumeControl = function (_Component) {
        inherits(VolumeControl, _Component);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options={}]
         *        The key/value store of player options.
         */
        function VolumeControl(player) {
            var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
            classCallCheck(this, VolumeControl);

            options.vertical = options.vertical || false;

            // Pass the vertical option down to the VolumeBar if
            // the VolumeBar is turned on.
            if (typeof options.volumeBar === 'undefined' || isPlain(options.volumeBar)) {
                options.volumeBar = options.volumeBar || {};
                options.volumeBar.vertical = options.vertical;
            }

            // hide this control if volume support is missing
            var _this = possibleConstructorReturn(this, _Component.call(this, player, options));

            checkVolumeSupport(_this, player);

            _this.throttledHandleMouseMove = throttle(bind(_this, _this.handleMouseMove), 25);

            _this.on('mousedown', _this.handleMouseDown);
            _this.on('touchstart', _this.handleMouseDown);

            // while the slider is active (the mouse has been pressed down and
            // is dragging) or in focus we do not want to hide the VolumeBar
            _this.on(_this.volumeBar, ['focus', 'slideractive'], function () {
                _this.volumeBar.addClass('vjs-slider-active');
                _this.addClass('vjs-slider-active');
                _this.trigger('slideractive');
            });

            _this.on(_this.volumeBar, ['blur', 'sliderinactive'], function () {
                _this.volumeBar.removeClass('vjs-slider-active');
                _this.removeClass('vjs-slider-active');
                _this.trigger('sliderinactive');
            });
            return _this;
        }

        /**
         * Create the `Component`'s DOM element
         *
         * @return {Element}
         *         The element that was created.
         */


        VolumeControl.prototype.createEl = function createEl() {
            var orientationClass = 'vjs-volume-horizontal';

            if (this.options_.vertical) {
                orientationClass = 'vjs-volume-vertical';
            }

            return _Component.prototype.createEl.call(this, 'div', {
                className: 'vjs-volume-control vjs-control ' + orientationClass
            });
        };

        /**
         * Handle `mousedown` or `touchstart` events on the `VolumeControl`.
         *
         * @param {EventTarget~Event} event
         *        `mousedown` or `touchstart` event that triggered this function
         *
         * @listens mousedown
         * @listens touchstart
         */


        VolumeControl.prototype.handleMouseDown = function handleMouseDown(event) {
            var doc = this.el_.ownerDocument;

            this.on(doc, 'mousemove', this.throttledHandleMouseMove);
            this.on(doc, 'touchmove', this.throttledHandleMouseMove);
            this.on(doc, 'mouseup', this.handleMouseUp);
            this.on(doc, 'touchend', this.handleMouseUp);
        };

        /**
         * Handle `mouseup` or `touchend` events on the `VolumeControl`.
         *
         * @param {EventTarget~Event} event
         *        `mouseup` or `touchend` event that triggered this function.
         *
         * @listens touchend
         * @listens mouseup
         */


        VolumeControl.prototype.handleMouseUp = function handleMouseUp(event) {
            var doc = this.el_.ownerDocument;

            this.off(doc, 'mousemove', this.throttledHandleMouseMove);
            this.off(doc, 'touchmove', this.throttledHandleMouseMove);
            this.off(doc, 'mouseup', this.handleMouseUp);
            this.off(doc, 'touchend', this.handleMouseUp);
        };

        /**
         * Handle `mousedown` or `touchstart` events on the `VolumeControl`.
         *
         * @param {EventTarget~Event} event
         *        `mousedown` or `touchstart` event that triggered this function
         *
         * @listens mousedown
         * @listens touchstart
         */


        VolumeControl.prototype.handleMouseMove = function handleMouseMove(event) {
            this.volumeBar.handleMouseMove(event);
        };

        return VolumeControl;
    }(Component);

    /**
     * Default options for the `VolumeControl`
     *
     * @type {Object}
     * @private
     */


    VolumeControl.prototype.options_ = {
        children: ['volumeBar']
    };

    Component.registerComponent('VolumeControl', VolumeControl);

    /**
     * @file mute-toggle.js
     */
    /**
     * A button component for muting the audio.
     *
     * @extends Button
     */

    var MuteToggle = function (_Button) {
        inherits(MuteToggle, _Button);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         */
        function MuteToggle(player, options) {
            classCallCheck(this, MuteToggle);

            // hide this control if volume support is missing
            var _this = possibleConstructorReturn(this, _Button.call(this, player, options));

            checkVolumeSupport(_this, player);

            _this.on(player, ['loadstart', 'volumechange'], _this.update);
            return _this;
        }

        /**
         * Builds the default DOM `className`.
         *
         * @return {string}
         *         The DOM `className` for this object.
         */


        MuteToggle.prototype.buildCSSClass = function buildCSSClass() {
            return 'vjs-mute-control ' + _Button.prototype.buildCSSClass.call(this);
        };

        /**
         * This gets called when an `MuteToggle` is "clicked". See
         * {@link ClickableComponent} for more detailed information on what a click can be.
         *
         * @param {EventTarget~Event} [event]
         *        The `keydown`, `tap`, or `click` event that caused this function to be
         *        called.
         *
         * @listens tap
         * @listens click
         */


        MuteToggle.prototype.handleClick = function handleClick(event) {
            var vol = this.player_.volume();
            var lastVolume = this.player_.lastVolume_();

            if (vol === 0) {
                var volumeToSet = lastVolume < 0.1 ? 0.1 : lastVolume;

                this.player_.volume(volumeToSet);
                this.player_.muted(false);
            } else {
                this.player_.muted(this.player_.muted() ? false : true);
            }
        };

        /**
         * Update the `MuteToggle` button based on the state of `volume` and `muted`
         * on the player.
         *
         * @param {EventTarget~Event} [event]
         *        The {@link Player#loadstart} event if this function was called
         *        through an event.
         *
         * @listens Player#loadstart
         * @listens Player#volumechange
         */


        MuteToggle.prototype.update = function update(event) {
            this.updateIcon_();
            this.updateControlText_();
        };

        /**
         * Update the appearance of the `MuteToggle` icon.
         *
         * Possible states (given `level` variable below):
         * - 0: crossed out
         * - 1: zero bars of volume
         * - 2: one bar of volume
         * - 3: two bars of volume
         *
         * @private
         */


        MuteToggle.prototype.updateIcon_ = function updateIcon_() {
            var vol = this.player_.volume();
            var level = 3;

            if (vol === 0 || this.player_.muted()) {
                level = 0;
            } else if (vol < 0.33) {
                level = 1;
            } else if (vol < 0.67) {
                level = 2;
            }

            // TODO improve muted icon classes
            for (var i = 0; i < 4; i++) {
                removeClass(this.el_, 'vjs-vol-' + i);
            }
            addClass(this.el_, 'vjs-vol-' + level);
        };

        /**
         * If `muted` has changed on the player, update the control text
         * (`title` attribute on `vjs-mute-control` element and content of
         * `vjs-control-text` element).
         *
         * @private
         */


        MuteToggle.prototype.updateControlText_ = function updateControlText_() {
            var soundOff = this.player_.muted() || this.player_.volume() === 0;
            var text = soundOff ? 'Unmute' : 'Mute';

            if (this.controlText() !== text) {
                this.controlText(text);
            }
        };

        return MuteToggle;
    }(Button);

    /**
     * The text that should display over the `MuteToggle`s controls. Added for localization.
     *
     * @type {string}
     * @private
     */


    MuteToggle.prototype.controlText_ = 'Mute';

    Component.registerComponent('MuteToggle', MuteToggle);

    /**
     * @file volume-control.js
     */
// Required children
    /**
     * A Component to contain the MuteToggle and VolumeControl so that
     * they can work together.
     *
     * @extends Component
     */

    var VolumePanel = function (_Component) {
        inherits(VolumePanel, _Component);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options={}]
         *        The key/value store of player options.
         */
        function VolumePanel(player) {
            var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
            classCallCheck(this, VolumePanel);

            if (typeof options.inline !== 'undefined') {
                options.inline = options.inline;
            } else {
                options.inline = true;
            }

            // pass the inline option down to the VolumeControl as vertical if
            // the VolumeControl is on.
            if (typeof options.volumeControl === 'undefined' || isPlain(options.volumeControl)) {
                options.volumeControl = options.volumeControl || {};
                options.volumeControl.vertical = !options.inline;
            }

            // hide this control if volume support is missing
            var _this = possibleConstructorReturn(this, _Component.call(this, player, options));

            checkVolumeSupport(_this, player);

            // while the slider is active (the mouse has been pressed down and
            // is dragging) or in focus we do not want to hide the VolumeBar
            _this.on(_this.volumeControl, ['slideractive'], _this.sliderActive_);
            _this.on(_this.muteToggle, 'focus', _this.sliderActive_);

            _this.on(_this.volumeControl, ['sliderinactive'], _this.sliderInactive_);
            _this.on(_this.muteToggle, 'blur', _this.sliderInactive_);
            return _this;
        }

        /**
         * Add vjs-slider-active class to the VolumePanel
         *
         * @listens VolumeControl#slideractive
         * @private
         */


        VolumePanel.prototype.sliderActive_ = function sliderActive_() {
            this.addClass('vjs-slider-active');
        };

        /**
         * Removes vjs-slider-active class to the VolumePanel
         *
         * @listens VolumeControl#sliderinactive
         * @private
         */


        VolumePanel.prototype.sliderInactive_ = function sliderInactive_() {
            this.removeClass('vjs-slider-active');
        };

        /**
         * Create the `Component`'s DOM element
         *
         * @return {Element}
         *         The element that was created.
         */


        VolumePanel.prototype.createEl = function createEl() {
            var orientationClass = 'vjs-volume-panel-horizontal';

            if (!this.options_.inline) {
                orientationClass = 'vjs-volume-panel-vertical';
            }

            return _Component.prototype.createEl.call(this, 'div', {
                className: 'vjs-volume-panel vjs-control ' + orientationClass
            });
        };

        return VolumePanel;
    }(Component);

    /**
     * Default options for the `VolumeControl`
     *
     * @type {Object}
     * @private
     */


    VolumePanel.prototype.options_ = {
        children: ['muteToggle', 'volumeControl']
    };

    Component.registerComponent('VolumePanel', VolumePanel);

    /**
     * @file menu.js
     */
    /**
     * The Menu component is used to build popup menus, including subtitle and
     * captions selection menus.
     *
     * @extends Component
     */

    var Menu = function (_Component) {
        inherits(Menu, _Component);

        /**
         * Create an instance of this class.
         *
         * @param {Player} player
         *        the player that this component should attach to
         *
         * @param {Object} [options]
         *        Object of option names and values
         *
         */
        function Menu(player, options) {
            classCallCheck(this, Menu);

            var _this = possibleConstructorReturn(this, _Component.call(this, player, options));

            if (options) {
                _this.menuButton_ = options.menuButton;
            }

            _this.focusedChild_ = -1;

            _this.on('keydown', _this.handleKeyPress);
            return _this;
        }

        /**
         * Add a {@link MenuItem} to the menu.
         *
         * @param {Object|string} component
         *        The name or instance of the `MenuItem` to add.
         *
         */


        Menu.prototype.addItem = function addItem(component) {
            this.addChild(component);
            component.on('click', bind(this, function (event) {
                // Unpress the associated MenuButton, and move focus back to it
                if (this.menuButton_) {
                    this.menuButton_.unpressButton();

                    // don't focus menu button if item is a caption settings item
                    // because focus will move elsewhere and it logs an error on IE8
                    if (component.name() !== 'CaptionSettingsMenuItem') {
                        this.menuButton_.focus();
                    }
                }
            }));
        };

        /**
         * Create the `Menu`s DOM element.
         *
         * @return {Element}
         *         the element that was created
         */


        Menu.prototype.createEl = function createEl$$1() {
            var contentElType = this.options_.contentElType || 'ul';

            this.contentEl_ = createEl(contentElType, {
                className: 'vjs-menu-content'
            });

            this.contentEl_.setAttribute('role', 'menu');

            var el = _Component.prototype.createEl.call(this, 'div', {
                append: this.contentEl_,
                className: 'vjs-menu'
            });

            el.appendChild(this.contentEl_);

            // Prevent clicks from bubbling up. Needed for Menu Buttons,
            // where a click on the parent is significant
            on(el, 'click', function (event) {
                event.preventDefault();
                event.stopImmediatePropagation();
            });

            return el;
        };

        /**
         * Handle a `keydown` event on this menu. This listener is added in the constructor.
         *
         * @param {EventTarget~Event} event
         *        A `keydown` event that happened on the menu.
         *
         * @listens keydown
         */


        Menu.prototype.handleKeyPress = function handleKeyPress(event) {
            // Left and Down Arrows
            if (event.which === 37 || event.which === 40) {
                event.preventDefault();
                this.stepForward();

                // Up and Right Arrows
            } else if (event.which === 38 || event.which === 39) {
                event.preventDefault();
                this.stepBack();
            }
        };

        /**
         * Move to next (lower) menu item for keyboard users.
         */


        Menu.prototype.stepForward = function stepForward() {
            var stepChild = 0;

            if (this.focusedChild_ !== undefined) {
                stepChild = this.focusedChild_ + 1;
            }
            this.focus(stepChild);
        };

        /**
         * Move to previous (higher) menu item for keyboard users.
         */


        Menu.prototype.stepBack = function stepBack() {
            var stepChild = 0;

            if (this.focusedChild_ !== undefined) {
                stepChild = this.focusedChild_ - 1;
            }
            this.focus(stepChild);
        };

        /**
         * Set focus on a {@link MenuItem} in the `Menu`.
         *
         * @param {Object|string} [item=0]
         *        Index of child item set focus on.
         */


        Menu.prototype.focus = function focus() {
            var item = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;

            var children = this.children().slice();
            var haveTitle = children.length && children[0].className && /vjs-menu-title/.test(children[0].className);

            if (haveTitle) {
                children.shift();
            }

            if (children.length > 0) {
                if (item < 0) {
                    item = 0;
                } else if (item >= children.length) {
                    item = children.length - 1;
                }

                this.focusedChild_ = item;

                children[item].el_.focus();
            }
        };

        return Menu;
    }(Component);

    Component.registerComponent('Menu', Menu);

    /**
     * @file menu-button.js
     */
    /**
     * A `MenuButton` class for any popup {@link Menu}.
     *
     * @extends Component
     */

    var MenuButton = function (_Component) {
        inherits(MenuButton, _Component);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options={}]
         *        The key/value store of player options.
         */
        function MenuButton(player) {
            var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
            classCallCheck(this, MenuButton);

            var _this = possibleConstructorReturn(this, _Component.call(this, player, options));

            _this.menuButton_ = new Button(player, options);

            _this.menuButton_.controlText(_this.controlText_);
            _this.menuButton_.el_.setAttribute('aria-haspopup', 'true');

            // Add buildCSSClass values to the button, not the wrapper
            var buttonClass = Button.prototype.buildCSSClass();

            _this.menuButton_.el_.className = _this.buildCSSClass() + ' ' + buttonClass;
            _this.menuButton_.removeClass('vjs-control');

            _this.addChild(_this.menuButton_);

            _this.update();

            _this.enabled_ = true;

            _this.on(_this.menuButton_, 'tap', _this.handleClick);
            _this.on(_this.menuButton_, 'click', _this.handleClick);
            _this.on(_this.menuButton_, 'focus', _this.handleFocus);
            _this.on(_this.menuButton_, 'blur', _this.handleBlur);

            _this.on('keydown', _this.handleSubmenuKeyPress);
            return _this;
        }

        /**
         * Update the menu based on the current state of its items.
         */


        MenuButton.prototype.update = function update() {
            var menu = this.createMenu();

            if (this.menu) {
                this.removeChild(this.menu);
            }

            this.menu = menu;
            this.addChild(menu);

            /**
             * Track the state of the menu button
             *
             * @type {Boolean}
             * @private
             */
            this.buttonPressed_ = false;
            this.menuButton_.el_.setAttribute('aria-expanded', 'false');

            if (this.items && this.items.length <= this.hideThreshold_) {
                this.hide();
            } else {
                this.show();
            }
        };

        /**
         * Create the menu and add all items to it.
         *
         * @return {Menu}
         *         The constructed menu
         */


        MenuButton.prototype.createMenu = function createMenu() {
            var menu = new Menu(this.player_, { menuButton: this });

            /**
             * Hide the menu if the number of items is less than or equal to this threshold. This defaults
             * to 0 and whenever we add items which can be hidden to the menu we'll increment it. We list
             * it here because every time we run `createMenu` we need to reset the value.
             *
             * @protected
             * @type {Number}
             */
            this.hideThreshold_ = 0;

            // Add a title list item to the top
            if (this.options_.title) {
                var title = createEl('li', {
                    className: 'vjs-menu-title',
                    innerHTML: toTitleCase(this.options_.title),
                    tabIndex: -1
                });

                this.hideThreshold_ += 1;

                menu.children_.unshift(title);
                prependTo(title, menu.contentEl());
            }

            this.items = this.createItems();

            if (this.items) {
                // Add menu items to the menu
                for (var i = 0; i < this.items.length; i++) {
                    menu.addItem(this.items[i]);
                }
            }

            return menu;
        };

        /**
         * Create the list of menu items. Specific to each subclass.
         *
         * @abstract
         */


        MenuButton.prototype.createItems = function createItems() {};

        /**
         * Create the `MenuButtons`s DOM element.
         *
         * @return {Element}
         *         The element that gets created.
         */


        MenuButton.prototype.createEl = function createEl$$1() {
            return _Component.prototype.createEl.call(this, 'div', {
                className: this.buildWrapperCSSClass()
            }, {});
        };

        /**
         * Allow sub components to stack CSS class names for the wrapper element
         *
         * @return {string}
         *         The constructed wrapper DOM `className`
         */


        MenuButton.prototype.buildWrapperCSSClass = function buildWrapperCSSClass() {
            var menuButtonClass = 'vjs-menu-button';

            // If the inline option is passed, we want to use different styles altogether.
            if (this.options_.inline === true) {
                menuButtonClass += '-inline';
            } else {
                menuButtonClass += '-popup';
            }

            // TODO: Fix the CSS so that this isn't necessary
            var buttonClass = Button.prototype.buildCSSClass();

            return 'vjs-menu-button ' + menuButtonClass + ' ' + buttonClass + ' ' + _Component.prototype.buildCSSClass.call(this);
        };

        /**
         * Builds the default DOM `className`.
         *
         * @return {string}
         *         The DOM `className` for this object.
         */


        MenuButton.prototype.buildCSSClass = function buildCSSClass() {
            var menuButtonClass = 'vjs-menu-button';

            // If the inline option is passed, we want to use different styles altogether.
            if (this.options_.inline === true) {
                menuButtonClass += '-inline';
            } else {
                menuButtonClass += '-popup';
            }

            return 'vjs-menu-button ' + menuButtonClass + ' ' + _Component.prototype.buildCSSClass.call(this);
        };

        /**
         * Get or set the localized control text that will be used for accessibility.
         *
         * > NOTE: This will come from the internal `menuButton_` element.
         *
         * @param {string} [text]
         *        Control text for element.
         *
         * @param {Element} [el=this.menuButton_.el()]
         *        Element to set the title on.
         *
         * @return {string}
         *         - The control text when getting
         */


        MenuButton.prototype.controlText = function controlText(text) {
            var el = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : this.menuButton_.el();

            return this.menuButton_.controlText(text, el);
        };

        /**
         * Handle a click on a `MenuButton`.
         * See {@link ClickableComponent#handleClick} for instances where this is called.
         *
         * @param {EventTarget~Event} event
         *        The `keydown`, `tap`, or `click` event that caused this function to be
         *        called.
         *
         * @listens tap
         * @listens click
         */


        MenuButton.prototype.handleClick = function handleClick(event) {
            // When you click the button it adds focus, which will show the menu.
            // So we'll remove focus when the mouse leaves the button. Focus is needed
            // for tab navigation.

            this.one(this.menu.contentEl(), 'mouseleave', bind(this, function (e) {
                this.unpressButton();
                this.el_.blur();
            }));
            if (this.buttonPressed_) {
                this.unpressButton();
            } else {
                this.pressButton();
            }
        };

        /**
         * Set the focus to the actual button, not to this element
         */


        MenuButton.prototype.focus = function focus() {
            this.menuButton_.focus();
        };

        /**
         * Remove the focus from the actual button, not this element
         */


        MenuButton.prototype.blur = function blur() {
            this.menuButton_.blur();
        };

        /**
         * This gets called when a `MenuButton` gains focus via a `focus` event.
         * Turns on listening for `keydown` events. When they happen it
         * calls `this.handleKeyPress`.
         *
         * @param {EventTarget~Event} event
         *        The `focus` event that caused this function to be called.
         *
         * @listens focus
         */


        MenuButton.prototype.handleFocus = function handleFocus() {
            on(document_1, 'keydown', bind(this, this.handleKeyPress));
        };

        /**
         * Called when a `MenuButton` loses focus. Turns off the listener for
         * `keydown` events. Which Stops `this.handleKeyPress` from getting called.
         *
         * @param {EventTarget~Event} event
         *        The `blur` event that caused this function to be called.
         *
         * @listens blur
         */


        MenuButton.prototype.handleBlur = function handleBlur() {
            off(document_1, 'keydown', bind(this, this.handleKeyPress));
        };

        /**
         * Handle tab, escape, down arrow, and up arrow keys for `MenuButton`. See
         * {@link ClickableComponent#handleKeyPress} for instances where this is called.
         *
         * @param {EventTarget~Event} event
         *        The `keydown` event that caused this function to be called.
         *
         * @listens keydown
         */


        MenuButton.prototype.handleKeyPress = function handleKeyPress(event) {

            // Escape (27) key or Tab (9) key unpress the 'button'
            if (event.which === 27 || event.which === 9) {
                if (this.buttonPressed_) {
                    this.unpressButton();
                }
                // Don't preventDefault for Tab key - we still want to lose focus
                if (event.which !== 9) {
                    event.preventDefault();
                    // Set focus back to the menu button's button
                    this.menuButton_.el_.focus();
                }
                // Up (38) key or Down (40) key press the 'button'
            } else if (event.which === 38 || event.which === 40) {
                if (!this.buttonPressed_) {
                    this.pressButton();
                    event.preventDefault();
                }
            }
        };

        /**
         * Handle a `keydown` event on a sub-menu. The listener for this is added in
         * the constructor.
         *
         * @param {EventTarget~Event} event
         *        Key press event
         *
         * @listens keydown
         */


        MenuButton.prototype.handleSubmenuKeyPress = function handleSubmenuKeyPress(event) {

            // Escape (27) key or Tab (9) key unpress the 'button'
            if (event.which === 27 || event.which === 9) {
                if (this.buttonPressed_) {
                    this.unpressButton();
                }
                // Don't preventDefault for Tab key - we still want to lose focus
                if (event.which !== 9) {
                    event.preventDefault();
                    // Set focus back to the menu button's button
                    this.menuButton_.el_.focus();
                }
            }
        };

        /**
         * Put the current `MenuButton` into a pressed state.
         */


        MenuButton.prototype.pressButton = function pressButton() {
            if (this.enabled_) {
                this.buttonPressed_ = true;
                this.menu.lockShowing();
                this.menuButton_.el_.setAttribute('aria-expanded', 'true');
                // set the focus into the submenu
                this.menu.focus();
            }
        };

        /**
         * Take the current `MenuButton` out of a pressed state.
         */


        MenuButton.prototype.unpressButton = function unpressButton() {
            if (this.enabled_) {
                this.buttonPressed_ = false;
                this.menu.unlockShowing();
                this.menuButton_.el_.setAttribute('aria-expanded', 'false');
            }
        };

        /**
         * Disable the `MenuButton`. Don't allow it to be clicked.
         */


        MenuButton.prototype.disable = function disable() {
            this.unpressButton();

            this.enabled_ = false;
            this.addClass('vjs-disabled');

            this.menuButton_.disable();
        };

        /**
         * Enable the `MenuButton`. Allow it to be clicked.
         */


        MenuButton.prototype.enable = function enable() {
            this.enabled_ = true;
            this.removeClass('vjs-disabled');

            this.menuButton_.enable();
        };

        return MenuButton;
    }(Component);

    Component.registerComponent('MenuButton', MenuButton);

    /**
     * @file track-button.js
     */
    /**
     * The base class for buttons that toggle specific  track types (e.g. subtitles).
     *
     * @extends MenuButton
     */

    var TrackButton = function (_MenuButton) {
        inherits(TrackButton, _MenuButton);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         */
        function TrackButton(player, options) {
            classCallCheck(this, TrackButton);

            var tracks = options.tracks;

            var _this = possibleConstructorReturn(this, _MenuButton.call(this, player, options));

            if (_this.items.length <= 1) {
                _this.hide();
            }

            if (!tracks) {
                return possibleConstructorReturn(_this);
            }

            var updateHandler = bind(_this, _this.update);

            tracks.addEventListener('removetrack', updateHandler);
            tracks.addEventListener('addtrack', updateHandler);
            _this.player_.on('ready', updateHandler);

            _this.player_.on('dispose', function () {
                tracks.removeEventListener('removetrack', updateHandler);
                tracks.removeEventListener('addtrack', updateHandler);
            });
            return _this;
        }

        return TrackButton;
    }(MenuButton);

    Component.registerComponent('TrackButton', TrackButton);

    /**
     * @file menu-item.js
     */
    /**
     * The component for a menu item. `<li>`
     *
     * @extends ClickableComponent
     */

    var MenuItem = function (_ClickableComponent) {
        inherits(MenuItem, _ClickableComponent);

        /**
         * Creates an instance of the this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options={}]
         *        The key/value store of player options.
         *
         */
        function MenuItem(player, options) {
            classCallCheck(this, MenuItem);

            var _this = possibleConstructorReturn(this, _ClickableComponent.call(this, player, options));

            _this.selectable = options.selectable;

            _this.selected(options.selected);

            if (_this.selectable) {
                // TODO: May need to be either menuitemcheckbox or menuitemradio,
                //       and may need logical grouping of menu items.
                _this.el_.setAttribute('role', 'menuitemcheckbox');
            } else {
                _this.el_.setAttribute('role', 'menuitem');
            }
            return _this;
        }

        /**
         * Create the `MenuItem's DOM element
         *
         * @param {string} [type=li]
         *        Element's node type, not actually used, always set to `li`.
         *
         * @param {Object} [props={}]
         *        An object of properties that should be set on the element
         *
         * @param {Object} [attrs={}]
         *        An object of attributes that should be set on the element
         *
         * @return {Element}
         *         The element that gets created.
         */


        MenuItem.prototype.createEl = function createEl(type, props, attrs) {
            // The control is textual, not just an icon
            this.nonIconControl = true;

            return _ClickableComponent.prototype.createEl.call(this, 'li', assign({
                className: 'vjs-menu-item',
                innerHTML: '<span class="vjs-menu-item-text">' + this.localize(this.options_.label) + '</span>',
                tabIndex: -1
            }, props), attrs);
        };

        /**
         * Any click on a `MenuItem` puts int into the selected state.
         * See {@link ClickableComponent#handleClick} for instances where this is called.
         *
         * @param {EventTarget~Event} event
         *        The `keydown`, `tap`, or `click` event that caused this function to be
         *        called.
         *
         * @listens tap
         * @listens click
         */


        MenuItem.prototype.handleClick = function handleClick(event) {
            this.selected(true);
        };

        /**
         * Set the state for this menu item as selected or not.
         *
         * @param {boolean} selected
         *        if the menu item is selected or not
         */


        MenuItem.prototype.selected = function selected(_selected) {
            if (this.selectable) {
                if (_selected) {
                    this.addClass('vjs-selected');
                    this.el_.setAttribute('aria-checked', 'true');
                    // aria-checked isn't fully supported by browsers/screen readers,
                    // so indicate selected state to screen reader in the control text.
                    this.controlText(', selected');
                } else {
                    this.removeClass('vjs-selected');
                    this.el_.setAttribute('aria-checked', 'false');
                    // Indicate un-selected state to screen reader
                    // Note that a space clears out the selected state text
                    this.controlText(' ');
                }
            }
        };

        return MenuItem;
    }(ClickableComponent);

    Component.registerComponent('MenuItem', MenuItem);

    /**
     * @file text-track-menu-item.js
     */
    /**
     * The specific menu item type for selecting a language within a text track kind
     *
     * @extends MenuItem
     */

    var TextTrackMenuItem = function (_MenuItem) {
        inherits(TextTrackMenuItem, _MenuItem);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         */
        function TextTrackMenuItem(player, options) {
            classCallCheck(this, TextTrackMenuItem);

            var track = options.track;
            var tracks = player.textTracks();

            // Modify options for parent MenuItem class's init.
            options.label = track.label || track.language || 'Unknown';
            options.selected = track.mode === 'showing';

            var _this = possibleConstructorReturn(this, _MenuItem.call(this, player, options));

            _this.track = track;
            var changeHandler = bind(_this, _this.handleTracksChange);
            var selectedLanguageChangeHandler = bind(_this, _this.handleSelectedLanguageChange);

            player.on(['loadstart', 'texttrackchange'], changeHandler);
            tracks.addEventListener('change', changeHandler);
            tracks.addEventListener('selectedlanguagechange', selectedLanguageChangeHandler);
            _this.on('dispose', function () {
                tracks.removeEventListener('change', changeHandler);
                tracks.removeEventListener('selectedlanguagechange', selectedLanguageChangeHandler);
            });

            // iOS7 doesn't dispatch change events to TextTrackLists when an
            // associated track's mode changes. Without something like
            // Object.observe() (also not present on iOS7), it's not
            // possible to detect changes to the mode attribute and polyfill
            // the change event. As a poor substitute, we manually dispatch
            // change events whenever the controls modify the mode.
            if (tracks.onchange === undefined) {
                var event = void 0;

                _this.on(['tap', 'click'], function () {
                    if (_typeof(window_1.Event) !== 'object') {
                        // Android 2.3 throws an Illegal Constructor error for window.Event
                        try {
                            event = new window_1.Event('change');
                        } catch (err) {
                            // continue regardless of error
                        }
                    }

                    if (!event) {
                        event = document_1.createEvent('Event');
                        event.initEvent('change', true, true);
                    }

                    tracks.dispatchEvent(event);
                });
            }
            return _this;
        }

        /**
         * This gets called when an `TextTrackMenuItem` is "clicked". See
         * {@link ClickableComponent} for more detailed information on what a click can be.
         *
         * @param {EventTarget~Event} event
         *        The `keydown`, `tap`, or `click` event that caused this function to be
         *        called.
         *
         * @listens tap
         * @listens click
         */


        TextTrackMenuItem.prototype.handleClick = function handleClick(event) {
            var kind = this.track.kind;
            var kinds = this.track.kinds;
            var tracks = this.player_.textTracks();

            if (!kinds) {
                kinds = [kind];
            }

            _MenuItem.prototype.handleClick.call(this, event);

            if (!tracks) {
                return;
            }

            for (var i = 0; i < tracks.length; i++) {
                var track = tracks[i];

                if (track === this.track && kinds.indexOf(track.kind) > -1) {
                    if (track.mode !== 'showing') {
                        track.mode = 'showing';
                    }
                } else if (track.mode !== 'disabled') {
                    track.mode = 'disabled';
                }
            }
        };

        /**
         * Handle text track list change
         *
         * @param {EventTarget~Event} event
         *        The `change` event that caused this function to be called.
         *
         * @listens TextTrackList#change
         */


        TextTrackMenuItem.prototype.handleTracksChange = function handleTracksChange(event) {
            this.selected(this.track.mode === 'showing');
        };

        TextTrackMenuItem.prototype.handleSelectedLanguageChange = function handleSelectedLanguageChange(event) {
            if (this.track.mode === 'showing') {
                var selectedLanguage = this.player_.cache_.selectedLanguage;

                // Don't replace the kind of track across the same language
                if (selectedLanguage && selectedLanguage.enabled && selectedLanguage.language === this.track.language && selectedLanguage.kind !== this.track.kind) {
                    return;
                }

                this.player_.cache_.selectedLanguage = {
                    enabled: true,
                    language: this.track.language,
                    kind: this.track.kind
                };
            }
        };

        return TextTrackMenuItem;
    }(MenuItem);

    Component.registerComponent('TextTrackMenuItem', TextTrackMenuItem);

    /**
     * @file off-text-track-menu-item.js
     */
    /**
     * A special menu item for turning of a specific type of text track
     *
     * @extends TextTrackMenuItem
     */

    var OffTextTrackMenuItem = function (_TextTrackMenuItem) {
        inherits(OffTextTrackMenuItem, _TextTrackMenuItem);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         */
        function OffTextTrackMenuItem(player, options) {
            classCallCheck(this, OffTextTrackMenuItem);

            // Create pseudo track info
            // Requires options['kind']
            options.track = {
                player: player,
                kind: options.kind,
                kinds: options.kinds,
                'default': false,
                mode: 'disabled'
            };

            if (!options.kinds) {
                options.kinds = [options.kind];
            }

            if (options.label) {
                options.track.label = options.label;
            } else {
                options.track.label = options.kinds.join(' and ') + ' off';
            }

            // MenuItem is selectable
            options.selectable = true;

            var _this = possibleConstructorReturn(this, _TextTrackMenuItem.call(this, player, options));

            _this.selected(true);
            return _this;
        }

        /**
         * Handle text track change
         *
         * @param {EventTarget~Event} event
         *        The event that caused this function to run
         */


        OffTextTrackMenuItem.prototype.handleTracksChange = function handleTracksChange(event) {
            var tracks = this.player().textTracks();
            var selected = true;

            for (var i = 0, l = tracks.length; i < l; i++) {
                var track = tracks[i];

                if (this.options_.kinds.indexOf(track.kind) > -1 && track.mode === 'showing') {
                    selected = false;
                    break;
                }
            }

            this.selected(selected);
        };

        OffTextTrackMenuItem.prototype.handleSelectedLanguageChange = function handleSelectedLanguageChange(event) {
            var tracks = this.player().textTracks();
            var allHidden = true;

            for (var i = 0, l = tracks.length; i < l; i++) {
                var track = tracks[i];

                if (['captions', 'descriptions', 'subtitles'].indexOf(track.kind) > -1 && track.mode === 'showing') {
                    allHidden = false;
                    break;
                }
            }

            if (allHidden) {
                this.player_.cache_.selectedLanguage = {
                    enabled: false
                };
            }
        };

        return OffTextTrackMenuItem;
    }(TextTrackMenuItem);

    Component.registerComponent('OffTextTrackMenuItem', OffTextTrackMenuItem);

    /**
     * @file text-track-button.js
     */
    /**
     * The base class for buttons that toggle specific text track types (e.g. subtitles)
     *
     * @extends MenuButton
     */

    var TextTrackButton = function (_TrackButton) {
        inherits(TextTrackButton, _TrackButton);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options={}]
         *        The key/value store of player options.
         */
        function TextTrackButton(player) {
            var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
            classCallCheck(this, TextTrackButton);

            options.tracks = player.textTracks();

            return possibleConstructorReturn(this, _TrackButton.call(this, player, options));
        }

        /**
         * Create a menu item for each text track
         *
         * @param {TextTrackMenuItem[]} [items=[]]
         *        Existing array of items to use during creation
         *
         * @return {TextTrackMenuItem[]}
         *         Array of menu items that were created
         */


        TextTrackButton.prototype.createItems = function createItems() {
            var items = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
            var TrackMenuItem = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : TextTrackMenuItem;


            // Label is an overide for the [track] off label
            // USed to localise captions/subtitles
            var label = void 0;

            if (this.label_) {
                label = this.label_ + ' off';
            }
            // Add an OFF menu item to turn all tracks off
            items.push(new OffTextTrackMenuItem(this.player_, {
                kinds: this.kinds_,
                kind: this.kind_,
                label: label
            }));

            this.hideThreshold_ += 1;

            var tracks = this.player_.textTracks();

            if (!Array.isArray(this.kinds_)) {
                this.kinds_ = [this.kind_];
            }

            for (var i = 0; i < tracks.length; i++) {
                var track = tracks[i];

                // only add tracks that are of an appropriate kind and have a label
                if (this.kinds_.indexOf(track.kind) > -1) {

                    var item = new TrackMenuItem(this.player_, {
                        track: track,
                        // MenuItem is selectable
                        selectable: true
                    });

                    item.addClass('vjs-' + track.kind + '-menu-item');
                    items.push(item);
                }
            }

            return items;
        };

        return TextTrackButton;
    }(TrackButton);

    Component.registerComponent('TextTrackButton', TextTrackButton);

    /**
     * @file chapters-track-menu-item.js
     */
    /**
     * The chapter track menu item
     *
     * @extends MenuItem
     */

    var ChaptersTrackMenuItem = function (_MenuItem) {
        inherits(ChaptersTrackMenuItem, _MenuItem);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         */
        function ChaptersTrackMenuItem(player, options) {
            classCallCheck(this, ChaptersTrackMenuItem);

            var track = options.track;
            var cue = options.cue;
            var currentTime = player.currentTime();

            // Modify options for parent MenuItem class's init.
            options.selectable = true;
            options.label = cue.text;
            options.selected = cue.startTime <= currentTime && currentTime < cue.endTime;

            var _this = possibleConstructorReturn(this, _MenuItem.call(this, player, options));

            _this.track = track;
            _this.cue = cue;
            track.addEventListener('cuechange', bind(_this, _this.update));
            return _this;
        }

        /**
         * This gets called when an `ChaptersTrackMenuItem` is "clicked". See
         * {@link ClickableComponent} for more detailed information on what a click can be.
         *
         * @param {EventTarget~Event} [event]
         *        The `keydown`, `tap`, or `click` event that caused this function to be
         *        called.
         *
         * @listens tap
         * @listens click
         */


        ChaptersTrackMenuItem.prototype.handleClick = function handleClick(event) {
            _MenuItem.prototype.handleClick.call(this);
            this.player_.currentTime(this.cue.startTime);
            this.update(this.cue.startTime);
        };

        /**
         * Update chapter menu item
         *
         * @param {EventTarget~Event} [event]
         *        The `cuechange` event that caused this function to run.
         *
         * @listens TextTrack#cuechange
         */


        ChaptersTrackMenuItem.prototype.update = function update(event) {
            var cue = this.cue;
            var currentTime = this.player_.currentTime();

            // vjs.log(currentTime, cue.startTime);
            this.selected(cue.startTime <= currentTime && currentTime < cue.endTime);
        };

        return ChaptersTrackMenuItem;
    }(MenuItem);

    Component.registerComponent('ChaptersTrackMenuItem', ChaptersTrackMenuItem);

    /**
     * @file chapters-button.js
     */
    /**
     * The button component for toggling and selecting chapters
     * Chapters act much differently than other text tracks
     * Cues are navigation vs. other tracks of alternative languages
     *
     * @extends TextTrackButton
     */

    var ChaptersButton = function (_TextTrackButton) {
        inherits(ChaptersButton, _TextTrackButton);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         *
         * @param {Component~ReadyCallback} [ready]
         *        The function to call when this function is ready.
         */
        function ChaptersButton(player, options, ready) {
            classCallCheck(this, ChaptersButton);
            return possibleConstructorReturn(this, _TextTrackButton.call(this, player, options, ready));
        }

        /**
         * Builds the default DOM `className`.
         *
         * @return {string}
         *         The DOM `className` for this object.
         */


        ChaptersButton.prototype.buildCSSClass = function buildCSSClass() {
            return 'vjs-chapters-button ' + _TextTrackButton.prototype.buildCSSClass.call(this);
        };

        ChaptersButton.prototype.buildWrapperCSSClass = function buildWrapperCSSClass() {
            return 'vjs-chapters-button ' + _TextTrackButton.prototype.buildWrapperCSSClass.call(this);
        };

        /**
         * Update the menu based on the current state of its items.
         *
         * @param {EventTarget~Event} [event]
         *        An event that triggered this function to run.
         *
         * @listens TextTrackList#addtrack
         * @listens TextTrackList#removetrack
         * @listens TextTrackList#change
         */


        ChaptersButton.prototype.update = function update(event) {
            if (!this.track_ || event && (event.type === 'addtrack' || event.type === 'removetrack')) {
                this.setTrack(this.findChaptersTrack());
            }
            _TextTrackButton.prototype.update.call(this);
        };

        /**
         * Set the currently selected track for the chapters button.
         *
         * @param {TextTrack} track
         *        The new track to select. Nothing will change if this is the currently selected
         *        track.
         */


        ChaptersButton.prototype.setTrack = function setTrack(track) {
            if (this.track_ === track) {
                return;
            }

            if (!this.updateHandler_) {
                this.updateHandler_ = this.update.bind(this);
            }

            // here this.track_ refers to the old track instance
            if (this.track_) {
                var remoteTextTrackEl = this.player_.remoteTextTrackEls().getTrackElementByTrack_(this.track_);

                if (remoteTextTrackEl) {
                    remoteTextTrackEl.removeEventListener('load', this.updateHandler_);
                }

                this.track_ = null;
            }

            this.track_ = track;

            // here this.track_ refers to the new track instance
            if (this.track_) {
                this.track_.mode = 'hidden';

                var _remoteTextTrackEl = this.player_.remoteTextTrackEls().getTrackElementByTrack_(this.track_);

                if (_remoteTextTrackEl) {
                    _remoteTextTrackEl.addEventListener('load', this.updateHandler_);
                }
            }
        };

        /**
         * Find the track object that is currently in use by this ChaptersButton
         *
         * @return {TextTrack|undefined}
         *         The current track or undefined if none was found.
         */


        ChaptersButton.prototype.findChaptersTrack = function findChaptersTrack() {
            var tracks = this.player_.textTracks() || [];

            for (var i = tracks.length - 1; i >= 0; i--) {
                // We will always choose the last track as our chaptersTrack
                var track = tracks[i];

                if (track.kind === this.kind_) {
                    return track;
                }
            }
        };

        /**
         * Get the caption for the ChaptersButton based on the track label. This will also
         * use the current tracks localized kind as a fallback if a label does not exist.
         *
         * @return {string}
         *         The tracks current label or the localized track kind.
         */


        ChaptersButton.prototype.getMenuCaption = function getMenuCaption() {
            if (this.track_ && this.track_.label) {
                return this.track_.label;
            }
            return this.localize(toTitleCase(this.kind_));
        };

        /**
         * Create menu from chapter track
         *
         * @return {Menu}
         *         New menu for the chapter buttons
         */


        ChaptersButton.prototype.createMenu = function createMenu() {
            this.options_.title = this.getMenuCaption();
            return _TextTrackButton.prototype.createMenu.call(this);
        };

        /**
         * Create a menu item for each text track
         *
         * @return {TextTrackMenuItem[]}
         *         Array of menu items
         */


        ChaptersButton.prototype.createItems = function createItems() {
            var items = [];

            if (!this.track_) {
                return items;
            }

            var cues = this.track_.cues;

            if (!cues) {
                return items;
            }

            for (var i = 0, l = cues.length; i < l; i++) {
                var cue = cues[i];
                var mi = new ChaptersTrackMenuItem(this.player_, { track: this.track_, cue: cue });

                items.push(mi);
            }

            return items;
        };

        return ChaptersButton;
    }(TextTrackButton);

    /**
     * `kind` of TextTrack to look for to associate it with this menu.
     *
     * @type {string}
     * @private
     */


    ChaptersButton.prototype.kind_ = 'chapters';

    /**
     * The text that should display over the `ChaptersButton`s controls. Added for localization.
     *
     * @type {string}
     * @private
     */
    ChaptersButton.prototype.controlText_ = 'Chapters';

    Component.registerComponent('ChaptersButton', ChaptersButton);

    /**
     * @file descriptions-button.js
     */
    /**
     * The button component for toggling and selecting descriptions
     *
     * @extends TextTrackButton
     */

    var DescriptionsButton = function (_TextTrackButton) {
        inherits(DescriptionsButton, _TextTrackButton);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         *
         * @param {Component~ReadyCallback} [ready]
         *        The function to call when this component is ready.
         */
        function DescriptionsButton(player, options, ready) {
            classCallCheck(this, DescriptionsButton);

            var _this = possibleConstructorReturn(this, _TextTrackButton.call(this, player, options, ready));

            var tracks = player.textTracks();
            var changeHandler = bind(_this, _this.handleTracksChange);

            tracks.addEventListener('change', changeHandler);
            _this.on('dispose', function () {
                tracks.removeEventListener('change', changeHandler);
            });
            return _this;
        }

        /**
         * Handle text track change
         *
         * @param {EventTarget~Event} event
         *        The event that caused this function to run
         *
         * @listens TextTrackList#change
         */


        DescriptionsButton.prototype.handleTracksChange = function handleTracksChange(event) {
            var tracks = this.player().textTracks();
            var disabled = false;

            // Check whether a track of a different kind is showing
            for (var i = 0, l = tracks.length; i < l; i++) {
                var track = tracks[i];

                if (track.kind !== this.kind_ && track.mode === 'showing') {
                    disabled = true;
                    break;
                }
            }

            // If another track is showing, disable this menu button
            if (disabled) {
                this.disable();
            } else {
                this.enable();
            }
        };

        /**
         * Builds the default DOM `className`.
         *
         * @return {string}
         *         The DOM `className` for this object.
         */


        DescriptionsButton.prototype.buildCSSClass = function buildCSSClass() {
            return 'vjs-descriptions-button ' + _TextTrackButton.prototype.buildCSSClass.call(this);
        };

        DescriptionsButton.prototype.buildWrapperCSSClass = function buildWrapperCSSClass() {
            return 'vjs-descriptions-button ' + _TextTrackButton.prototype.buildWrapperCSSClass.call(this);
        };

        return DescriptionsButton;
    }(TextTrackButton);

    /**
     * `kind` of TextTrack to look for to associate it with this menu.
     *
     * @type {string}
     * @private
     */


    DescriptionsButton.prototype.kind_ = 'descriptions';

    /**
     * The text that should display over the `DescriptionsButton`s controls. Added for localization.
     *
     * @type {string}
     * @private
     */
    DescriptionsButton.prototype.controlText_ = 'Descriptions';

    Component.registerComponent('DescriptionsButton', DescriptionsButton);

    /**
     * @file subtitles-button.js
     */
    /**
     * The button component for toggling and selecting subtitles
     *
     * @extends TextTrackButton
     */

    var SubtitlesButton = function (_TextTrackButton) {
        inherits(SubtitlesButton, _TextTrackButton);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         *
         * @param {Component~ReadyCallback} [ready]
         *        The function to call when this component is ready.
         */
        function SubtitlesButton(player, options, ready) {
            classCallCheck(this, SubtitlesButton);
            return possibleConstructorReturn(this, _TextTrackButton.call(this, player, options, ready));
        }

        /**
         * Builds the default DOM `className`.
         *
         * @return {string}
         *         The DOM `className` for this object.
         */


        SubtitlesButton.prototype.buildCSSClass = function buildCSSClass() {
            return 'vjs-subtitles-button ' + _TextTrackButton.prototype.buildCSSClass.call(this);
        };

        SubtitlesButton.prototype.buildWrapperCSSClass = function buildWrapperCSSClass() {
            return 'vjs-subtitles-button ' + _TextTrackButton.prototype.buildWrapperCSSClass.call(this);
        };

        return SubtitlesButton;
    }(TextTrackButton);

    /**
     * `kind` of TextTrack to look for to associate it with this menu.
     *
     * @type {string}
     * @private
     */


    SubtitlesButton.prototype.kind_ = 'subtitles';

    /**
     * The text that should display over the `SubtitlesButton`s controls. Added for localization.
     *
     * @type {string}
     * @private
     */
    SubtitlesButton.prototype.controlText_ = 'Subtitles';

    Component.registerComponent('SubtitlesButton', SubtitlesButton);

    /**
     * @file caption-settings-menu-item.js
     */
    /**
     * The menu item for caption track settings menu
     *
     * @extends TextTrackMenuItem
     */

    var CaptionSettingsMenuItem = function (_TextTrackMenuItem) {
        inherits(CaptionSettingsMenuItem, _TextTrackMenuItem);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         */
        function CaptionSettingsMenuItem(player, options) {
            classCallCheck(this, CaptionSettingsMenuItem);

            options.track = {
                player: player,
                kind: options.kind,
                label: options.kind + ' settings',
                selectable: false,
                'default': false,
                mode: 'disabled'
            };

            // CaptionSettingsMenuItem has no concept of 'selected'
            options.selectable = false;

            options.name = 'CaptionSettingsMenuItem';

            var _this = possibleConstructorReturn(this, _TextTrackMenuItem.call(this, player, options));

            _this.addClass('vjs-texttrack-settings');
            _this.controlText(', opens ' + options.kind + ' settings dialog');
            return _this;
        }

        /**
         * This gets called when an `CaptionSettingsMenuItem` is "clicked". See
         * {@link ClickableComponent} for more detailed information on what a click can be.
         *
         * @param {EventTarget~Event} [event]
         *        The `keydown`, `tap`, or `click` event that caused this function to be
         *        called.
         *
         * @listens tap
         * @listens click
         */


        CaptionSettingsMenuItem.prototype.handleClick = function handleClick(event) {
            this.player().getChild('textTrackSettings').open();
        };

        return CaptionSettingsMenuItem;
    }(TextTrackMenuItem);

    Component.registerComponent('CaptionSettingsMenuItem', CaptionSettingsMenuItem);

    /**
     * @file captions-button.js
     */
    /**
     * The button component for toggling and selecting captions
     *
     * @extends TextTrackButton
     */

    var CaptionsButton = function (_TextTrackButton) {
        inherits(CaptionsButton, _TextTrackButton);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         *
         * @param {Component~ReadyCallback} [ready]
         *        The function to call when this component is ready.
         */
        function CaptionsButton(player, options, ready) {
            classCallCheck(this, CaptionsButton);
            return possibleConstructorReturn(this, _TextTrackButton.call(this, player, options, ready));
        }

        /**
         * Builds the default DOM `className`.
         *
         * @return {string}
         *         The DOM `className` for this object.
         */


        CaptionsButton.prototype.buildCSSClass = function buildCSSClass() {
            return 'vjs-captions-button ' + _TextTrackButton.prototype.buildCSSClass.call(this);
        };

        CaptionsButton.prototype.buildWrapperCSSClass = function buildWrapperCSSClass() {
            return 'vjs-captions-button ' + _TextTrackButton.prototype.buildWrapperCSSClass.call(this);
        };

        /**
         * Create caption menu items
         *
         * @return {CaptionSettingsMenuItem[]}
         *         The array of current menu items.
         */


        CaptionsButton.prototype.createItems = function createItems() {
            var items = [];

            if (!(this.player().tech_ && this.player().tech_.featuresNativeTextTracks)) {
                items.push(new CaptionSettingsMenuItem(this.player_, { kind: this.kind_ }));

                this.hideThreshold_ += 1;
            }

            return _TextTrackButton.prototype.createItems.call(this, items);
        };

        return CaptionsButton;
    }(TextTrackButton);

    /**
     * `kind` of TextTrack to look for to associate it with this menu.
     *
     * @type {string}
     * @private
     */


    CaptionsButton.prototype.kind_ = 'captions';

    /**
     * The text that should display over the `CaptionsButton`s controls. Added for localization.
     *
     * @type {string}
     * @private
     */
    CaptionsButton.prototype.controlText_ = 'Captions';

    Component.registerComponent('CaptionsButton', CaptionsButton);

    /**
     * @file subs-caps-menu-item.js
     */
    /**
     * SubsCapsMenuItem has an [cc] icon to distinguish captions from subtitles
     * in the SubsCapsMenu.
     *
     * @extends TextTrackMenuItem
     */

    var SubsCapsMenuItem = function (_TextTrackMenuItem) {
        inherits(SubsCapsMenuItem, _TextTrackMenuItem);

        function SubsCapsMenuItem() {
            classCallCheck(this, SubsCapsMenuItem);
            return possibleConstructorReturn(this, _TextTrackMenuItem.apply(this, arguments));
        }

        SubsCapsMenuItem.prototype.createEl = function createEl(type, props, attrs) {
            var innerHTML = '<span class="vjs-menu-item-text">' + this.localize(this.options_.label);

            if (this.options_.track.kind === 'captions') {
                innerHTML += '\n        <span aria-hidden="true" class="vjs-icon-placeholder"></span>\n        <span class="vjs-control-text"> ' + this.localize('Captions') + '</span>\n      ';
            }

            innerHTML += '</span>';

            var el = _TextTrackMenuItem.prototype.createEl.call(this, type, assign({
                innerHTML: innerHTML
            }, props), attrs);

            return el;
        };

        return SubsCapsMenuItem;
    }(TextTrackMenuItem);

    Component.registerComponent('SubsCapsMenuItem', SubsCapsMenuItem);

    /**
     * @file sub-caps-button.js
     */
    /**
     * The button component for toggling and selecting captions and/or subtitles
     *
     * @extends TextTrackButton
     */

    var SubsCapsButton = function (_TextTrackButton) {
        inherits(SubsCapsButton, _TextTrackButton);

        function SubsCapsButton(player) {
            var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
            classCallCheck(this, SubsCapsButton);

            // Although North America uses "captions" in most cases for
            // "captions and subtitles" other locales use "subtitles"
            var _this = possibleConstructorReturn(this, _TextTrackButton.call(this, player, options));

            _this.label_ = 'subtitles';
            if (['en', 'en-us', 'en-ca', 'fr-ca'].indexOf(_this.player_.language_) > -1) {
                _this.label_ = 'captions';
            }
            _this.menuButton_.controlText(toTitleCase(_this.label_));
            return _this;
        }

        /**
         * Builds the default DOM `className`.
         *
         * @return {string}
         *         The DOM `className` for this object.
         */


        SubsCapsButton.prototype.buildCSSClass = function buildCSSClass() {
            return 'vjs-subs-caps-button ' + _TextTrackButton.prototype.buildCSSClass.call(this);
        };

        SubsCapsButton.prototype.buildWrapperCSSClass = function buildWrapperCSSClass() {
            return 'vjs-subs-caps-button ' + _TextTrackButton.prototype.buildWrapperCSSClass.call(this);
        };

        /**
         * Create caption/subtitles menu items
         *
         * @return {CaptionSettingsMenuItem[]}
         *         The array of current menu items.
         */


        SubsCapsButton.prototype.createItems = function createItems() {
            var items = [];

            if (!(this.player().tech_ && this.player().tech_.featuresNativeTextTracks)) {
                items.push(new CaptionSettingsMenuItem(this.player_, { kind: this.label_ }));

                this.hideThreshold_ += 1;
            }

            items = _TextTrackButton.prototype.createItems.call(this, items, SubsCapsMenuItem);
            return items;
        };

        return SubsCapsButton;
    }(TextTrackButton);

    /**
     * `kind`s of TextTrack to look for to associate it with this menu.
     *
     * @type {array}
     * @private
     */


    SubsCapsButton.prototype.kinds_ = ['captions', 'subtitles'];

    /**
     * The text that should display over the `SubsCapsButton`s controls.
     *
     *
     * @type {string}
     * @private
     */
    SubsCapsButton.prototype.controlText_ = 'Subtitles';

    Component.registerComponent('SubsCapsButton', SubsCapsButton);

    /**
     * @file audio-track-menu-item.js
     */
    /**
     * An {@link AudioTrack} {@link MenuItem}
     *
     * @extends MenuItem
     */

    var AudioTrackMenuItem = function (_MenuItem) {
        inherits(AudioTrackMenuItem, _MenuItem);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         */
        function AudioTrackMenuItem(player, options) {
            classCallCheck(this, AudioTrackMenuItem);

            var track = options.track;
            var tracks = player.audioTracks();

            // Modify options for parent MenuItem class's init.
            options.label = track.label || track.language || 'Unknown';
            options.selected = track.enabled;

            var _this = possibleConstructorReturn(this, _MenuItem.call(this, player, options));

            _this.track = track;

            var changeHandler = bind(_this, _this.handleTracksChange);

            tracks.addEventListener('change', changeHandler);
            _this.on('dispose', function () {
                tracks.removeEventListener('change', changeHandler);
            });
            return _this;
        }

        /**
         * This gets called when an `AudioTrackMenuItem is "clicked". See {@link ClickableComponent}
         * for more detailed information on what a click can be.
         *
         * @param {EventTarget~Event} [event]
         *        The `keydown`, `tap`, or `click` event that caused this function to be
         *        called.
         *
         * @listens tap
         * @listens click
         */


        AudioTrackMenuItem.prototype.handleClick = function handleClick(event) {
            var tracks = this.player_.audioTracks();

            _MenuItem.prototype.handleClick.call(this, event);

            for (var i = 0; i < tracks.length; i++) {
                var track = tracks[i];

                track.enabled = track === this.track;
            }
        };

        /**
         * Handle any {@link AudioTrack} change.
         *
         * @param {EventTarget~Event} [event]
         *        The {@link AudioTrackList#change} event that caused this to run.
         *
         * @listens AudioTrackList#change
         */


        AudioTrackMenuItem.prototype.handleTracksChange = function handleTracksChange(event) {
            this.selected(this.track.enabled);
        };

        return AudioTrackMenuItem;
    }(MenuItem);

    Component.registerComponent('AudioTrackMenuItem', AudioTrackMenuItem);

    /**
     * @file audio-track-button.js
     */
    /**
     * The base class for buttons that toggle specific {@link AudioTrack} types.
     *
     * @extends TrackButton
     */

    var AudioTrackButton = function (_TrackButton) {
        inherits(AudioTrackButton, _TrackButton);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options={}]
         *        The key/value store of player options.
         */
        function AudioTrackButton(player) {
            var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
            classCallCheck(this, AudioTrackButton);

            options.tracks = player.audioTracks();

            return possibleConstructorReturn(this, _TrackButton.call(this, player, options));
        }

        /**
         * Builds the default DOM `className`.
         *
         * @return {string}
         *         The DOM `className` for this object.
         */


        AudioTrackButton.prototype.buildCSSClass = function buildCSSClass() {
            return 'vjs-audio-button ' + _TrackButton.prototype.buildCSSClass.call(this);
        };

        AudioTrackButton.prototype.buildWrapperCSSClass = function buildWrapperCSSClass() {
            return 'vjs-audio-button ' + _TrackButton.prototype.buildWrapperCSSClass.call(this);
        };

        /**
         * Create a menu item for each audio track
         *
         * @param {AudioTrackMenuItem[]} [items=[]]
         *        An array of existing menu items to use.
         *
         * @return {AudioTrackMenuItem[]}
         *         An array of menu items
         */


        AudioTrackButton.prototype.createItems = function createItems() {
            var items = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];

            // if there's only one audio track, there no point in showing it
            this.hideThreshold_ = 1;

            var tracks = this.player_.audioTracks();

            for (var i = 0; i < tracks.length; i++) {
                var track = tracks[i];

                items.push(new AudioTrackMenuItem(this.player_, {
                    track: track,
                    // MenuItem is selectable
                    selectable: true
                }));
            }

            return items;
        };

        return AudioTrackButton;
    }(TrackButton);

    /**
     * The text that should display over the `AudioTrackButton`s controls. Added for localization.
     *
     * @type {string}
     * @private
     */


    AudioTrackButton.prototype.controlText_ = 'Audio Track';
    Component.registerComponent('AudioTrackButton', AudioTrackButton);

    /**
     * @file playback-rate-menu-item.js
     */
    /**
     * The specific menu item type for selecting a playback rate.
     *
     * @extends MenuItem
     */

    var PlaybackRateMenuItem = function (_MenuItem) {
        inherits(PlaybackRateMenuItem, _MenuItem);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         */
        function PlaybackRateMenuItem(player, options) {
            classCallCheck(this, PlaybackRateMenuItem);

            var label = options.rate;
            var rate = parseFloat(label, 10);

            // Modify options for parent MenuItem class's init.
            options.label = label;
            options.selected = rate === 1;
            options.selectable = true;

            var _this = possibleConstructorReturn(this, _MenuItem.call(this, player, options));

            _this.label = label;
            _this.rate = rate;

            _this.on(player, 'ratechange', _this.update);
            return _this;
        }

        /**
         * This gets called when an `PlaybackRateMenuItem` is "clicked". See
         * {@link ClickableComponent} for more detailed information on what a click can be.
         *
         * @param {EventTarget~Event} [event]
         *        The `keydown`, `tap`, or `click` event that caused this function to be
         *        called.
         *
         * @listens tap
         * @listens click
         */


        PlaybackRateMenuItem.prototype.handleClick = function handleClick(event) {
            _MenuItem.prototype.handleClick.call(this);
            this.player().playbackRate(this.rate);
        };

        /**
         * Update the PlaybackRateMenuItem when the playbackrate changes.
         *
         * @param {EventTarget~Event} [event]
         *        The `ratechange` event that caused this function to run.
         *
         * @listens Player#ratechange
         */


        PlaybackRateMenuItem.prototype.update = function update(event) {
            this.selected(this.player().playbackRate() === this.rate);
        };

        return PlaybackRateMenuItem;
    }(MenuItem);

    /**
     * The text that should display over the `PlaybackRateMenuItem`s controls. Added for localization.
     *
     * @type {string}
     * @private
     */


    PlaybackRateMenuItem.prototype.contentElType = 'button';

    Component.registerComponent('PlaybackRateMenuItem', PlaybackRateMenuItem);

    /**
     * @file playback-rate-menu-button.js
     */
    /**
     * The component for controlling the playback rate.
     *
     * @extends MenuButton
     */

    var PlaybackRateMenuButton = function (_MenuButton) {
        inherits(PlaybackRateMenuButton, _MenuButton);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *        The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         */
        function PlaybackRateMenuButton(player, options) {
            classCallCheck(this, PlaybackRateMenuButton);

            var _this = possibleConstructorReturn(this, _MenuButton.call(this, player, options));

            _this.updateVisibility();
            _this.updateLabel();

            _this.on(player, 'loadstart', _this.updateVisibility);
            _this.on(player, 'ratechange', _this.updateLabel);
            return _this;
        }

        /**
         * Create the `Component`'s DOM element
         *
         * @return {Element}
         *         The element that was created.
         */


        PlaybackRateMenuButton.prototype.createEl = function createEl$$1() {
            var el = _MenuButton.prototype.createEl.call(this);

            this.labelEl_ = createEl('div', {
                className: 'vjs-playback-rate-value',
                innerHTML: '1x'
            });

            el.appendChild(this.labelEl_);

            return el;
        };

        /**
         * Builds the default DOM `className`.
         *
         * @return {string}
         *         The DOM `className` for this object.
         */


        PlaybackRateMenuButton.prototype.buildCSSClass = function buildCSSClass() {
            return 'vjs-playback-rate ' + _MenuButton.prototype.buildCSSClass.call(this);
        };

        PlaybackRateMenuButton.prototype.buildWrapperCSSClass = function buildWrapperCSSClass() {
            return 'vjs-playback-rate ' + _MenuButton.prototype.buildWrapperCSSClass.call(this);
        };

        /**
         * Create the playback rate menu
         *
         * @return {Menu}
         *         Menu object populated with {@link PlaybackRateMenuItem}s
         */


        PlaybackRateMenuButton.prototype.createMenu = function createMenu() {
            var menu = new Menu(this.player());
            var rates = this.playbackRates();

            if (rates) {
                for (var i = rates.length - 1; i >= 0; i--) {
                    menu.addChild(new PlaybackRateMenuItem(this.player(), { rate: rates[i] + 'x' }));
                }
            }

            return menu;
        };

        /**
         * Updates ARIA accessibility attributes
         */


        PlaybackRateMenuButton.prototype.updateARIAAttributes = function updateARIAAttributes() {
            // Current playback rate
            this.el().setAttribute('aria-valuenow', this.player().playbackRate());
        };

        /**
         * This gets called when an `PlaybackRateMenuButton` is "clicked". See
         * {@link ClickableComponent} for more detailed information on what a click can be.
         *
         * @param {EventTarget~Event} [event]
         *        The `keydown`, `tap`, or `click` event that caused this function to be
         *        called.
         *
         * @listens tap
         * @listens click
         */


        PlaybackRateMenuButton.prototype.handleClick = function handleClick(event) {
            // select next rate option
            var currentRate = this.player().playbackRate();
            var rates = this.playbackRates();

            // this will select first one if the last one currently selected
            var newRate = rates[0];

            for (var i = 0; i < rates.length; i++) {
                if (rates[i] > currentRate) {
                    newRate = rates[i];
                    break;
                }
            }
            this.player().playbackRate(newRate);
        };

        /**
         * Get possible playback rates
         *
         * @return {Array}
         *         All possible playback rates
         */


        PlaybackRateMenuButton.prototype.playbackRates = function playbackRates() {
            return this.options_.playbackRates || this.options_.playerOptions && this.options_.playerOptions.playbackRates;
        };

        /**
         * Get whether playback rates is supported by the tech
         * and an array of playback rates exists
         *
         * @return {boolean}
         *         Whether changing playback rate is supported
         */


        PlaybackRateMenuButton.prototype.playbackRateSupported = function playbackRateSupported() {
            return this.player().tech_ && this.player().tech_.featuresPlaybackRate && this.playbackRates() && this.playbackRates().length > 0;
        };

        /**
         * Hide playback rate controls when they're no playback rate options to select
         *
         * @param {EventTarget~Event} [event]
         *        The event that caused this function to run.
         *
         * @listens Player#loadstart
         */


        PlaybackRateMenuButton.prototype.updateVisibility = function updateVisibility(event) {
            if (this.playbackRateSupported()) {
                this.removeClass('vjs-hidden');
            } else {
                this.addClass('vjs-hidden');
            }
        };

        /**
         * Update button label when rate changed
         *
         * @param {EventTarget~Event} [event]
         *        The event that caused this function to run.
         *
         * @listens Player#ratechange
         */


        PlaybackRateMenuButton.prototype.updateLabel = function updateLabel(event) {
            if (this.playbackRateSupported()) {
                this.labelEl_.innerHTML = this.player().playbackRate() + 'x';
            }
        };

        return PlaybackRateMenuButton;
    }(MenuButton);

    /**
     * The text that should display over the `FullscreenToggle`s controls. Added for localization.
     *
     * @type {string}
     * @private
     */


    PlaybackRateMenuButton.prototype.controlText_ = 'Playback Rate';

    Component.registerComponent('PlaybackRateMenuButton', PlaybackRateMenuButton);

    /**
     * @file spacer.js
     */
    /**
     * Just an empty spacer element that can be used as an append point for plugins, etc.
     * Also can be used to create space between elements when necessary.
     *
     * @extends Component
     */

    var Spacer = function (_Component) {
        inherits(Spacer, _Component);

        function Spacer() {
            classCallCheck(this, Spacer);
            return possibleConstructorReturn(this, _Component.apply(this, arguments));
        }

        /**
         * Builds the default DOM `className`.
         *
         * @return {string}
         *         The DOM `className` for this object.
         */
        Spacer.prototype.buildCSSClass = function buildCSSClass() {
            return 'vjs-spacer ' + _Component.prototype.buildCSSClass.call(this);
        };

        /**
         * Create the `Component`'s DOM element
         *
         * @return {Element}
         *         The element that was created.
         */


        Spacer.prototype.createEl = function createEl() {
            return _Component.prototype.createEl.call(this, 'div', {
                className: this.buildCSSClass()
            });
        };

        return Spacer;
    }(Component);

    Component.registerComponent('Spacer', Spacer);

    /**
     * @file custom-control-spacer.js
     */
    /**
     * Spacer specifically meant to be used as an insertion point for new plugins, etc.
     *
     * @extends Spacer
     */

    var CustomControlSpacer = function (_Spacer) {
        inherits(CustomControlSpacer, _Spacer);

        function CustomControlSpacer() {
            classCallCheck(this, CustomControlSpacer);
            return possibleConstructorReturn(this, _Spacer.apply(this, arguments));
        }

        /**
         * Builds the default DOM `className`.
         *
         * @return {string}
         *         The DOM `className` for this object.
         */
        CustomControlSpacer.prototype.buildCSSClass = function buildCSSClass() {
            return 'vjs-custom-control-spacer ' + _Spacer.prototype.buildCSSClass.call(this);
        };

        /**
         * Create the `Component`'s DOM element
         *
         * @return {Element}
         *         The element that was created.
         */


        CustomControlSpacer.prototype.createEl = function createEl() {
            var el = _Spacer.prototype.createEl.call(this, {
                className: this.buildCSSClass()
            });

            // No-flex/table-cell mode requires there be some content
            // in the cell to fill the remaining space of the table.
            el.innerHTML = '&nbsp;';
            return el;
        };

        return CustomControlSpacer;
    }(Spacer);

    Component.registerComponent('CustomControlSpacer', CustomControlSpacer);

    /**
     * @file control-bar.js
     */
// Required children
    /**
     * Container of main controls.
     *
     * @extends Component
     */

    var ControlBar = function (_Component) {
        inherits(ControlBar, _Component);

        function ControlBar() {
            classCallCheck(this, ControlBar);
            return possibleConstructorReturn(this, _Component.apply(this, arguments));
        }

        /**
         * Create the `Component`'s DOM element
         *
         * @return {Element}
         *         The element that was created.
         */
        ControlBar.prototype.createEl = function createEl() {
            return _Component.prototype.createEl.call(this, 'div', {
                className: 'vjs-control-bar',
                dir: 'ltr'
            }, {
                // The control bar is a group, but we don't aria-label it to avoid
                //  over-announcing by JAWS
                role: 'group'
            });
        };

        return ControlBar;
    }(Component);

    /**
     * Default options for `ControlBar`
     *
     * @type {Object}
     * @private
     */


    ControlBar.prototype.options_ = {
        children: ['playToggle', 'volumePanel', 'currentTimeDisplay', 'timeDivider', 'durationDisplay', 'progressControl', 'liveDisplay', 'remainingTimeDisplay', 'customControlSpacer', 'playbackRateMenuButton', 'chaptersButton', 'descriptionsButton', 'subsCapsButton', 'audioTrackButton', 'fullscreenToggle']
    };

    Component.registerComponent('ControlBar', ControlBar);

    /**
     * @file error-display.js
     */
    /**
     * A display that indicates an error has occurred. This means that the video
     * is unplayable.
     *
     * @extends ModalDialog
     */

    var ErrorDisplay = function (_ModalDialog) {
        inherits(ErrorDisplay, _ModalDialog);

        /**
         * Creates an instance of this class.
         *
         * @param  {Player} player
         *         The `Player` that this class should be attached to.
         *
         * @param  {Object} [options]
         *         The key/value store of player options.
         */
        function ErrorDisplay(player, options) {
            classCallCheck(this, ErrorDisplay);

            var _this = possibleConstructorReturn(this, _ModalDialog.call(this, player, options));

            _this.on(player, 'error', _this.open);
            return _this;
        }

        /**
         * Builds the default DOM `className`.
         *
         * @return {string}
         *         The DOM `className` for this object.
         *
         * @deprecated Since version 5.
         */


        ErrorDisplay.prototype.buildCSSClass = function buildCSSClass() {
            return 'vjs-error-display ' + _ModalDialog.prototype.buildCSSClass.call(this);
        };

        /**
         * Gets the localized error message based on the `Player`s error.
         *
         * @return {string}
         *         The `Player`s error message localized or an empty string.
         */


        ErrorDisplay.prototype.content = function content() {
            var error = this.player().error();

            return error ? this.localize(error.message) : '';
        };

        return ErrorDisplay;
    }(ModalDialog);

    /**
     * The default options for an `ErrorDisplay`.
     *
     * @private
     */


    ErrorDisplay.prototype.options_ = mergeOptions(ModalDialog.prototype.options_, {
        pauseOnOpen: false,
        fillAlways: true,
        temporary: false,
        uncloseable: true
    });

    Component.registerComponent('ErrorDisplay', ErrorDisplay);

    /**
     * @file text-track-settings.js
     */
    var LOCAL_STORAGE_KEY = 'vjs-text-track-settings';

    var COLOR_BLACK = ['#000', 'Black'];
    var COLOR_BLUE = ['#00F', 'Blue'];
    var COLOR_CYAN = ['#0FF', 'Cyan'];
    var COLOR_GREEN = ['#0F0', 'Green'];
    var COLOR_MAGENTA = ['#F0F', 'Magenta'];
    var COLOR_RED = ['#F00', 'Red'];
    var COLOR_WHITE = ['#FFF', 'White'];
    var COLOR_YELLOW = ['#FF0', 'Yellow'];

    var OPACITY_OPAQUE = ['1', 'Opaque'];
    var OPACITY_SEMI = ['0.5', 'Semi-Transparent'];
    var OPACITY_TRANS = ['0', 'Transparent'];

// Configuration for the various <select> elements in the DOM of this component.
//
// Possible keys include:
//
// `default`:
//   The default option index. Only needs to be provided if not zero.
// `parser`:
//   A function which is used to parse the value from the selected option in
//   a customized way.
// `selector`:
//   The selector used to find the associated <select> element.
    var selectConfigs = {
        backgroundColor: {
            selector: '.vjs-bg-color > select',
            id: 'captions-background-color-%s',
            label: 'Color',
            options: [COLOR_BLACK, COLOR_WHITE, COLOR_RED, COLOR_GREEN, COLOR_BLUE, COLOR_YELLOW, COLOR_MAGENTA, COLOR_CYAN]
        },

        backgroundOpacity: {
            selector: '.vjs-bg-opacity > select',
            id: 'captions-background-opacity-%s',
            label: 'Transparency',
            options: [OPACITY_OPAQUE, OPACITY_SEMI, OPACITY_TRANS]
        },

        color: {
            selector: '.vjs-fg-color > select',
            id: 'captions-foreground-color-%s',
            label: 'Color',
            options: [COLOR_WHITE, COLOR_BLACK, COLOR_RED, COLOR_GREEN, COLOR_BLUE, COLOR_YELLOW, COLOR_MAGENTA, COLOR_CYAN]
        },

        edgeStyle: {
            selector: '.vjs-edge-style > select',
            id: '%s',
            label: 'Text Edge Style',
            options: [['none', 'None'], ['raised', 'Raised'], ['depressed', 'Depressed'], ['uniform', 'Uniform'], ['dropshadow', 'Dropshadow']]
        },

        fontFamily: {
            selector: '.vjs-font-family > select',
            id: 'captions-font-family-%s',
            label: 'Font Family',
            options: [['proportionalSansSerif', 'Proportional Sans-Serif'], ['monospaceSansSerif', 'Monospace Sans-Serif'], ['proportionalSerif', 'Proportional Serif'], ['monospaceSerif', 'Monospace Serif'], ['casual', 'Casual'], ['script', 'Script'], ['small-caps', 'Small Caps']]
        },

        fontPercent: {
            selector: '.vjs-font-percent > select',
            id: 'captions-font-size-%s',
            label: 'Font Size',
            options: [['0.50', '50%'], ['0.75', '75%'], ['1.00', '100%'], ['1.25', '125%'], ['1.50', '150%'], ['1.75', '175%'], ['2.00', '200%'], ['3.00', '300%'], ['4.00', '400%']],
            'default': 2,
            parser: function parser(v) {
                return v === '1.00' ? null : Number(v);
            }
        },

        textOpacity: {
            selector: '.vjs-text-opacity > select',
            id: 'captions-foreground-opacity-%s',
            label: 'Transparency',
            options: [OPACITY_OPAQUE, OPACITY_SEMI]
        },

        // Options for this object are defined below.
        windowColor: {
            selector: '.vjs-window-color > select',
            id: 'captions-window-color-%s',
            label: 'Color'
        },

        // Options for this object are defined below.
        windowOpacity: {
            selector: '.vjs-window-opacity > select',
            id: 'captions-window-opacity-%s',
            label: 'Transparency',
            options: [OPACITY_TRANS, OPACITY_SEMI, OPACITY_OPAQUE]
        }
    };

    selectConfigs.windowColor.options = selectConfigs.backgroundColor.options;

    /**
     * Get the actual value of an option.
     *
     * @param  {string} value
     *         The value to get
     *
     * @param  {Function} [parser]
     *         Optional function to adjust the value.
     *
     * @return {Mixed}
     *         - Will be `undefined` if no value exists
     *         - Will be `undefined` if the given value is "none".
     *         - Will be the actual value otherwise.
     *
     * @private
     */
    function parseOptionValue(value, parser) {
        if (parser) {
            value = parser(value);
        }

        if (value && value !== 'none') {
            return value;
        }
    }

    /**
     * Gets the value of the selected <option> element within a <select> element.
     *
     * @param  {Element} el
     *         the element to look in
     *
     * @param  {Function} [parser]
     *         Optional function to adjust the value.
     *
     * @return {Mixed}
     *         - Will be `undefined` if no value exists
     *         - Will be `undefined` if the given value is "none".
     *         - Will be the actual value otherwise.
     *
     * @private
     */
    function getSelectedOptionValue(el, parser) {
        var value = el.options[el.options.selectedIndex].value;

        return parseOptionValue(value, parser);
    }

    /**
     * Sets the selected <option> element within a <select> element based on a
     * given value.
     *
     * @param {Element} el
     *        The element to look in.
     *
     * @param {string} value
     *        the property to look on.
     *
     * @param {Function} [parser]
     *        Optional function to adjust the value before comparing.
     *
     * @private
     */
    function setSelectedOption(el, value, parser) {
        if (!value) {
            return;
        }

        for (var i = 0; i < el.options.length; i++) {
            if (parseOptionValue(el.options[i].value, parser) === value) {
                el.selectedIndex = i;
                break;
            }
        }
    }

    /**
     * Manipulate Text Tracks settings.
     *
     * @extends ModalDialog
     */

    var TextTrackSettings = function (_ModalDialog) {
        inherits(TextTrackSettings, _ModalDialog);

        /**
         * Creates an instance of this class.
         *
         * @param {Player} player
         *         The `Player` that this class should be attached to.
         *
         * @param {Object} [options]
         *         The key/value store of player options.
         */
        function TextTrackSettings(player, options) {
            classCallCheck(this, TextTrackSettings);

            options.temporary = false;

            var _this = possibleConstructorReturn(this, _ModalDialog.call(this, player, options));

            _this.updateDisplay = bind(_this, _this.updateDisplay);

            // fill the modal and pretend we have opened it
            _this.fill();
            _this.hasBeenOpened_ = _this.hasBeenFilled_ = true;

            _this.endDialog = createEl('p', {
                className: 'vjs-control-text',
                textContent: _this.localize('End of dialog window.')
            });
            _this.el().appendChild(_this.endDialog);

            _this.setDefaults();

            // Grab `persistTextTrackSettings` from the player options if not passed in child options
            if (options.persistTextTrackSettings === undefined) {
                _this.options_.persistTextTrackSettings = _this.options_.playerOptions.persistTextTrackSettings;
            }

            _this.on(_this.$('.vjs-done-button'), 'click', function () {
                _this.saveSettings();
                _this.close();
            });

            _this.on(_this.$('.vjs-default-button'), 'click', function () {
                _this.setDefaults();
                _this.updateDisplay();
            });

            each(selectConfigs, function (config) {
                _this.on(_this.$(config.selector), 'change', _this.updateDisplay);
            });

            if (_this.options_.persistTextTrackSettings) {
                _this.restoreSettings();
            }
            return _this;
        }

        /**
         * Create a <select> element with configured options.
         *
         * @param {string} key
         *        Configuration key to use during creation.
         *
         * @return {string}
         *         An HTML string.
         *
         * @private
         */


        TextTrackSettings.prototype.createElSelect_ = function createElSelect_(key) {
            var _this2 = this;

            var legendId = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';
            var type = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 'label';

            var config = selectConfigs[key];
            var id = config.id.replace('%s', this.id_);

            return ['<' + type + ' id="' + id + '" class="' + (type === 'label' ? 'vjs-label' : '') + '">', this.localize(config.label), '</' + type + '>', '<select aria-labelledby="' + legendId + ' ' + id + '">'].concat(config.options.map(function (o) {
                var optionId = id + '-' + o[1];

                return ['<option id="' + optionId + '" value="' + o[0] + '" ', 'aria-labelledby="' + legendId + ' ' + id + ' ' + optionId + '">', _this2.localize(o[1]), '</option>'].join('');
            })).concat('</select>').join('');
        };

        /**
         * Create foreground color element for the component
         *
         * @return {string}
         *         An HTML string.
         *
         * @private
         */


        TextTrackSettings.prototype.createElFgColor_ = function createElFgColor_() {
            var legendId = 'captions-text-legend-' + this.id_;

            return ['<fieldset class="vjs-fg-color vjs-track-setting">', '<legend id="' + legendId + '">', this.localize('Text'), '</legend>', this.createElSelect_('color', legendId), '<span class="vjs-text-opacity vjs-opacity">', this.createElSelect_('textOpacity', legendId), '</span>', '</fieldset>'].join('');
        };

        /**
         * Create background color element for the component
         *
         * @return {string}
         *         An HTML string.
         *
         * @private
         */


        TextTrackSettings.prototype.createElBgColor_ = function createElBgColor_() {
            var legendId = 'captions-background-' + this.id_;

            return ['<fieldset class="vjs-bg-color vjs-track-setting">', '<legend id="' + legendId + '">', this.localize('Background'), '</legend>', this.createElSelect_('backgroundColor', legendId), '<span class="vjs-bg-opacity vjs-opacity">', this.createElSelect_('backgroundOpacity', legendId), '</span>', '</fieldset>'].join('');
        };

        /**
         * Create window color element for the component
         *
         * @return {string}
         *         An HTML string.
         *
         * @private
         */


        TextTrackSettings.prototype.createElWinColor_ = function createElWinColor_() {
            var legendId = 'captions-window-' + this.id_;

            return ['<fieldset class="vjs-window-color vjs-track-setting">', '<legend id="' + legendId + '">', this.localize('Window'), '</legend>', this.createElSelect_('windowColor', legendId), '<span class="vjs-window-opacity vjs-opacity">', this.createElSelect_('windowOpacity', legendId), '</span>', '</fieldset>'].join('');
        };

        /**
         * Create color elements for the component
         *
         * @return {Element}
         *         The element that was created
         *
         * @private
         */


        TextTrackSettings.prototype.createElColors_ = function createElColors_() {
            return createEl('div', {
                className: 'vjs-track-settings-colors',
                innerHTML: [this.createElFgColor_(), this.createElBgColor_(), this.createElWinColor_()].join('')
            });
        };

        /**
         * Create font elements for the component
         *
         * @return {Element}
         *         The element that was created.
         *
         * @private
         */


        TextTrackSettings.prototype.createElFont_ = function createElFont_() {
            return createEl('div', {
                className: 'vjs-track-settings-font">',
                innerHTML: ['<fieldset class="vjs-font-percent vjs-track-setting">', this.createElSelect_('fontPercent', '', 'legend'), '</fieldset>', '<fieldset class="vjs-edge-style vjs-track-setting">', this.createElSelect_('edgeStyle', '', 'legend'), '</fieldset>', '<fieldset class="vjs-font-family vjs-track-setting">', this.createElSelect_('fontFamily', '', 'legend'), '</fieldset>'].join('')
            });
        };

        /**
         * Create controls for the component
         *
         * @return {Element}
         *         The element that was created.
         *
         * @private
         */


        TextTrackSettings.prototype.createElControls_ = function createElControls_() {
            var defaultsDescription = this.localize('restore all settings to the default values');

            return createEl('div', {
                className: 'vjs-track-settings-controls',
                innerHTML: ['<button class="vjs-default-button" title="' + defaultsDescription + '">', this.localize('Reset'), '<span class="vjs-control-text"> ' + defaultsDescription + '</span>', '</button>', '<button class="vjs-done-button">' + this.localize('Done') + '</button>'].join('')
            });
        };

        TextTrackSettings.prototype.content = function content() {
            return [this.createElColors_(), this.createElFont_(), this.createElControls_()];
        };

        TextTrackSettings.prototype.label = function label() {
            return this.localize('Caption Settings Dialog');
        };

        TextTrackSettings.prototype.description = function description() {
            return this.localize('Beginning of dialog window. Escape will cancel and close the window.');
        };

        TextTrackSettings.prototype.buildCSSClass = function buildCSSClass() {
            return _ModalDialog.prototype.buildCSSClass.call(this) + ' vjs-text-track-settings';
        };

        /**
         * Gets an object of text track settings (or null).
         *
         * @return {Object}
         *         An object with config values parsed from the DOM or localStorage.
         */


        TextTrackSettings.prototype.getValues = function getValues() {
            var _this3 = this;

            return reduce(selectConfigs, function (accum, config, key) {
                var value = getSelectedOptionValue(_this3.$(config.selector), config.parser);

                if (value !== undefined) {
                    accum[key] = value;
                }

                return accum;
            }, {});
        };

        /**
         * Sets text track settings from an object of values.
         *
         * @param {Object} values
         *        An object with config values parsed from the DOM or localStorage.
         */


        TextTrackSettings.prototype.setValues = function setValues(values) {
            var _this4 = this;

            each(selectConfigs, function (config, key) {
                setSelectedOption(_this4.$(config.selector), values[key], config.parser);
            });
        };

        /**
         * Sets all `<select>` elements to their default values.
         */


        TextTrackSettings.prototype.setDefaults = function setDefaults() {
            var _this5 = this;

            each(selectConfigs, function (config) {
                var index = config.hasOwnProperty('default') ? config['default'] : 0;

                _this5.$(config.selector).selectedIndex = index;
            });
        };

        /**
         * Restore texttrack settings from localStorage
         */


        TextTrackSettings.prototype.restoreSettings = function restoreSettings() {
            var values = void 0;

            try {
                values = JSON.parse(window_1.localStorage.getItem(LOCAL_STORAGE_KEY));
            } catch (err) {
                log$1.warn(err);
            }

            if (values) {
                this.setValues(values);
            }
        };

        /**
         * Save text track settings to localStorage
         */


        TextTrackSettings.prototype.saveSettings = function saveSettings() {
            if (!this.options_.persistTextTrackSettings) {
                return;
            }

            var values = this.getValues();

            try {
                if (Object.keys(values).length) {
                    window_1.localStorage.setItem(LOCAL_STORAGE_KEY, JSON.stringify(values));
                } else {
                    window_1.localStorage.removeItem(LOCAL_STORAGE_KEY);
                }
            } catch (err) {
                log$1.warn(err);
            }
        };

        /**
         * Update display of text track settings
         */


        TextTrackSettings.prototype.updateDisplay = function updateDisplay() {
            var ttDisplay = this.player_.getChild('textTrackDisplay');

            if (ttDisplay) {
                ttDisplay.updateDisplay();
            }
        };

        /**
         * conditionally blur the element and refocus the captions button
         *
         * @private
         */


        TextTrackSettings.prototype.conditionalBlur_ = function conditionalBlur_() {
            this.previouslyActiveEl_ = null;
            this.off(document_1, 'keydown', this.handleKeyDown);

            var cb = this.player_.controlBar;
            var subsCapsBtn = cb && cb.subsCapsButton;
            var ccBtn = cb && cb.captionsButton;

            if (subsCapsBtn) {
                subsCapsBtn.focus();
            } else if (ccBtn) {
                ccBtn.focus();
            }
        };

        return TextTrackSettings;
    }(ModalDialog);

    Component.registerComponent('TextTrackSettings', TextTrackSettings);

    var _templateObject$2 = taggedTemplateLiteralLoose(['Text Tracks are being loaded from another origin but the crossorigin attribute isn\'t used.\n            This may prevent text tracks from loading.'], ['Text Tracks are being loaded from another origin but the crossorigin attribute isn\'t used.\n            This may prevent text tracks from loading.']);

    /**
     * @file html5.js
     */
    /**
     * HTML5 Media Controller - Wrapper for HTML5 Media API
     *
     * @mixes Tech~SouceHandlerAdditions
     * @extends Tech
     */

    var Html5 = function (_Tech) {
        inherits(Html5, _Tech);

        /**
         * Create an instance of this Tech.
         *
         * @param {Object} [options]
         *        The key/value store of player options.
         *
         * @param {Component~ReadyCallback} ready
         *        Callback function to call when the `HTML5` Tech is ready.
         */
        function Html5(options, ready) {
            classCallCheck(this, Html5);

            var _this = possibleConstructorReturn(this, _Tech.call(this, options, ready));

            var source = options.source;
            var crossoriginTracks = false;

            // Set the source if one is provided
            // 1) Check if the source is new (if not, we want to keep the original so playback isn't interrupted)
            // 2) Check to see if the network state of the tag was failed at init, and if so, reset the source
            // anyway so the error gets fired.
            if (source && (_this.el_.currentSrc !== source.src || options.tag && options.tag.initNetworkState_ === 3)) {
                _this.setSource(source);
            } else {
                _this.handleLateInit_(_this.el_);
            }

            if (_this.el_.hasChildNodes()) {

                var nodes = _this.el_.childNodes;
                var nodesLength = nodes.length;
                var removeNodes = [];

                while (nodesLength--) {
                    var node = nodes[nodesLength];
                    var nodeName = node.nodeName.toLowerCase();

                    if (nodeName === 'track') {
                        if (!_this.featuresNativeTextTracks) {
                            // Empty video tag tracks so the built-in player doesn't use them also.
                            // This may not be fast enough to stop HTML5 browsers from reading the tags
                            // so we'll need to turn off any default tracks if we're manually doing
                            // captions and subtitles. videoElement.textTracks
                            removeNodes.push(node);
                        } else {
                            // store HTMLTrackElement and TextTrack to remote list
                            _this.remoteTextTrackEls().addTrackElement_(node);
                            _this.remoteTextTracks().addTrack(node.track);
                            _this.textTracks().addTrack(node.track);
                            if (!crossoriginTracks && !_this.el_.hasAttribute('crossorigin') && isCrossOrigin(node.src)) {
                                crossoriginTracks = true;
                            }
                        }
                    }
                }

                for (var i = 0; i < removeNodes.length; i++) {
                    _this.el_.removeChild(removeNodes[i]);
                }
            }

            _this.proxyNativeTracks_();
            if (_this.featuresNativeTextTracks && crossoriginTracks) {
                log$1.warn(tsml(_templateObject$2));
            }

            // prevent iOS Safari from disabling metadata text tracks during native playback
            _this.restoreMetadataTracksInIOSNativePlayer_();

            // Determine if native controls should be used
            // Our goal should be to get the custom controls on mobile solid everywhere
            // so we can remove this all together. Right now this will block custom
            // controls on touch enabled laptops like the Chrome Pixel
            if ((TOUCH_ENABLED || IS_IPHONE || IS_NATIVE_ANDROID) && options.nativeControlsForTouch === true) {
                _this.setControls(true);
            }

            // on iOS, we want to proxy `webkitbeginfullscreen` and `webkitendfullscreen`
            // into a `fullscreenchange` event
            _this.proxyWebkitFullscreen_();

            _this.triggerReady();
            return _this;
        }

        /**
         * Dispose of `HTML5` media element and remove all tracks.
         */


        Html5.prototype.dispose = function dispose() {
            Html5.disposeMediaElement(this.el_);
            // tech will handle clearing of the emulated track list
            _Tech.prototype.dispose.call(this);
        };

        /**
         * When a captions track is enabled in the iOS Safari native player, all other
         * tracks are disabled (including metadata tracks), which nulls all of their
         * associated cue points. This will restore metadata tracks to their pre-fullscreen
         * state in those cases so that cue points are not needlessly lost.
         *
         * @private
         */


        Html5.prototype.restoreMetadataTracksInIOSNativePlayer_ = function restoreMetadataTracksInIOSNativePlayer_() {
            var textTracks = this.textTracks();
            var metadataTracksPreFullscreenState = void 0;

            // captures a snapshot of every metadata track's current state
            var takeMetadataTrackSnapshot = function takeMetadataTrackSnapshot() {
                metadataTracksPreFullscreenState = [];

                for (var i = 0; i < textTracks.length; i++) {
                    var track = textTracks[i];

                    if (track.kind === 'metadata') {
                        metadataTracksPreFullscreenState.push({
                            track: track,
                            storedMode: track.mode
                        });
                    }
                }
            };

            // snapshot each metadata track's initial state, and update the snapshot
            // each time there is a track 'change' event
            takeMetadataTrackSnapshot();
            textTracks.addEventListener('change', takeMetadataTrackSnapshot);

            var restoreTrackMode = function restoreTrackMode() {
                for (var i = 0; i < metadataTracksPreFullscreenState.length; i++) {
                    var storedTrack = metadataTracksPreFullscreenState[i];

                    if (storedTrack.track.mode === 'disabled' && storedTrack.track.mode !== storedTrack.storedMode) {
                        storedTrack.track.mode = storedTrack.storedMode;
                    }
                }
                // we only want this handler to be executed on the first 'change' event
                textTracks.removeEventListener('change', restoreTrackMode);
            };

            // when we enter fullscreen playback, stop updating the snapshot and
            // restore all track modes to their pre-fullscreen state
            this.on('webkitbeginfullscreen', function () {
                textTracks.removeEventListener('change', takeMetadataTrackSnapshot);

                // remove the listener before adding it just in case it wasn't previously removed
                textTracks.removeEventListener('change', restoreTrackMode);
                textTracks.addEventListener('change', restoreTrackMode);
            });

            // start updating the snapshot again after leaving fullscreen
            this.on('webkitendfullscreen', function () {
                // remove the listener before adding it just in case it wasn't previously removed
                textTracks.removeEventListener('change', takeMetadataTrackSnapshot);
                textTracks.addEventListener('change', takeMetadataTrackSnapshot);

                // remove the restoreTrackMode handler in case it wasn't triggered during fullscreen playback
                textTracks.removeEventListener('change', restoreTrackMode);
            });
        };

        /**
         * Proxy all native track list events to our track lists if the browser we are playing
         * in supports that type of track list.
         *
         * @private
         */


        Html5.prototype.proxyNativeTracks_ = function proxyNativeTracks_() {
            var _this2 = this;

            NORMAL.names.forEach(function (name) {
                var props = NORMAL[name];
                var elTracks = _this2.el()[props.getterName];
                var techTracks = _this2[props.getterName]();

                if (!_this2['featuresNative' + props.capitalName + 'Tracks'] || !elTracks || !elTracks.addEventListener) {
                    return;
                }
                var listeners = {
                    change: function change(e) {
                        techTracks.trigger({
                            type: 'change',
                            target: techTracks,
                            currentTarget: techTracks,
                            srcElement: techTracks
                        });
                    },
                    addtrack: function addtrack(e) {
                        techTracks.addTrack(e.track);
                    },
                    removetrack: function removetrack(e) {
                        techTracks.removeTrack(e.track);
                    }
                };
                var removeOldTracks = function removeOldTracks() {
                    var removeTracks = [];

                    for (var i = 0; i < techTracks.length; i++) {
                        var found = false;

                        for (var j = 0; j < elTracks.length; j++) {
                            if (elTracks[j] === techTracks[i]) {
                                found = true;
                                break;
                            }
                        }

                        if (!found) {
                            removeTracks.push(techTracks[i]);
                        }
                    }

                    while (removeTracks.length) {
                        techTracks.removeTrack(removeTracks.shift());
                    }
                };

                Object.keys(listeners).forEach(function (eventName) {
                    var listener = listeners[eventName];

                    elTracks.addEventListener(eventName, listener);
                    _this2.on('dispose', function (e) {
                        return elTracks.removeEventListener(eventName, listener);
                    });
                });

                // Remove (native) tracks that are not used anymore
                _this2.on('loadstart', removeOldTracks);
                _this2.on('dispose', function (e) {
                    return _this2.off('loadstart', removeOldTracks);
                });
            });
        };

        /**
         * Create the `Html5` Tech's DOM element.
         *
         * @return {Element}
         *         The element that gets created.
         */


        Html5.prototype.createEl = function createEl$$1() {
            var el = this.options_.tag;

            // Check if this browser supports moving the element into the box.
            // On the iPhone video will break if you move the element,
            // So we have to create a brand new element.
            // If we ingested the player div, we do not need to move the media element.
            if (!el || !(this.options_.playerElIngest || this.movingMediaElementInDOM)) {

                // If the original tag is still there, clone and remove it.
                if (el) {
                    var clone = el.cloneNode(true);

                    if (el.parentNode) {
                        el.parentNode.insertBefore(clone, el);
                    }
                    Html5.disposeMediaElement(el);
                    el = clone;
                } else {
                    el = document_1.createElement('video');

                    // determine if native controls should be used
                    var tagAttributes = this.options_.tag && getAttributes(this.options_.tag);
                    var attributes = mergeOptions({}, tagAttributes);

                    if (!TOUCH_ENABLED || this.options_.nativeControlsForTouch !== true) {
                        delete attributes.controls;
                    }

                    setAttributes(el, assign(attributes, {
                        id: this.options_.techId,
                        'class': 'vjs-tech'
                    }));
                }

                el.playerId = this.options_.playerId;
            }

            if (typeof this.options_.preload !== 'undefined') {
                setAttribute(el, 'preload', this.options_.preload);
            }

            // Update specific tag settings, in case they were overridden
            // `autoplay` has to be *last* so that `muted` and `playsinline` are present
            // when iOS/Safari or other browsers attempt to autoplay.
            var settingsAttrs = ['loop', 'muted', 'playsinline', 'autoplay'];

            for (var i = settingsAttrs.length - 1; i >= 0; i--) {
                var attr = settingsAttrs[i];
                var value = this.options_[attr];

                if (typeof value !== 'undefined') {
                    if (value) {
                        setAttribute(el, attr, attr);
                    } else {
                        removeAttribute(el, attr);
                    }
                    el[attr] = value;
                }
            }

            return el;
        };

        /**
         * This will be triggered if the loadstart event has already fired, before videojs was
         * ready. Two known examples of when this can happen are:
         * 1. If we're loading the playback object after it has started loading
         * 2. The media is already playing the (often with autoplay on) then
         *
         * This function will fire another loadstart so that videojs can catchup.
         *
         * @fires Tech#loadstart
         *
         * @return {undefined}
         *         returns nothing.
         */


        Html5.prototype.handleLateInit_ = function handleLateInit_(el) {
            if (el.networkState === 0 || el.networkState === 3) {
                // The video element hasn't started loading the source yet
                // or didn't find a source
                return;
            }

            if (el.readyState === 0) {
                // NetworkState is set synchronously BUT loadstart is fired at the
                // end of the current stack, usually before setInterval(fn, 0).
                // So at this point we know loadstart may have already fired or is
                // about to fire, and either way the player hasn't seen it yet.
                // We don't want to fire loadstart prematurely here and cause a
                // double loadstart so we'll wait and see if it happens between now
                // and the next loop, and fire it if not.
                // HOWEVER, we also want to make sure it fires before loadedmetadata
                // which could also happen between now and the next loop, so we'll
                // watch for that also.
                var loadstartFired = false;
                var setLoadstartFired = function setLoadstartFired() {
                    loadstartFired = true;
                };

                this.on('loadstart', setLoadstartFired);

                var triggerLoadstart = function triggerLoadstart() {
                    // We did miss the original loadstart. Make sure the player
                    // sees loadstart before loadedmetadata
                    if (!loadstartFired) {
                        this.trigger('loadstart');
                    }
                };

                this.on('loadedmetadata', triggerLoadstart);

                this.ready(function () {
                    this.off('loadstart', setLoadstartFired);
                    this.off('loadedmetadata', triggerLoadstart);

                    if (!loadstartFired) {
                        // We did miss the original native loadstart. Fire it now.
                        this.trigger('loadstart');
                    }
                });

                return;
            }

            // From here on we know that loadstart already fired and we missed it.
            // The other readyState events aren't as much of a problem if we double
            // them, so not going to go to as much trouble as loadstart to prevent
            // that unless we find reason to.
            var eventsToTrigger = ['loadstart'];

            // loadedmetadata: newly equal to HAVE_METADATA (1) or greater
            eventsToTrigger.push('loadedmetadata');

            // loadeddata: newly increased to HAVE_CURRENT_DATA (2) or greater
            if (el.readyState >= 2) {
                eventsToTrigger.push('loadeddata');
            }

            // canplay: newly increased to HAVE_FUTURE_DATA (3) or greater
            if (el.readyState >= 3) {
                eventsToTrigger.push('canplay');
            }

            // canplaythrough: newly equal to HAVE_ENOUGH_DATA (4)
            if (el.readyState >= 4) {
                eventsToTrigger.push('canplaythrough');
            }

            // We still need to give the player time to add event listeners
            this.ready(function () {
                eventsToTrigger.forEach(function (type) {
                    this.trigger(type);
                }, this);
            });
        };

        /**
         * Set current time for the `HTML5` tech.
         *
         * @param {number} seconds
         *        Set the current time of the media to this.
         */


        Html5.prototype.setCurrentTime = function setCurrentTime(seconds) {
            try {
                this.el_.currentTime = seconds;
            } catch (e) {
                log$1(e, 'Video is not ready. (Video.js)');
                // this.warning(VideoJS.warnings.videoNotReady);
            }
        };

        /**
         * Get the current duration of the HTML5 media element.
         *
         * @return {number}
         *         The duration of the media or 0 if there is no duration.
         */


        Html5.prototype.duration = function duration() {
            var _this3 = this;

            // Android Chrome will report duration as Infinity for VOD HLS until after
            // playback has started, which triggers the live display erroneously.
            // Return NaN if playback has not started and trigger a durationupdate once
            // the duration can be reliably known.
            if (this.el_.duration === Infinity && IS_ANDROID && IS_CHROME && this.el_.currentTime === 0) {
                // Wait for the first `timeupdate` with currentTime > 0 - there may be
                // several with 0
                var checkProgress = function checkProgress() {
                    if (_this3.el_.currentTime > 0) {
                        // Trigger durationchange for genuinely live video
                        if (_this3.el_.duration === Infinity) {
                            _this3.trigger('durationchange');
                        }
                        _this3.off('timeupdate', checkProgress);
                    }
                };

                this.on('timeupdate', checkProgress);
                return NaN;
            }
            return this.el_.duration || NaN;
        };

        /**
         * Get the current width of the HTML5 media element.
         *
         * @return {number}
         *         The width of the HTML5 media element.
         */


        Html5.prototype.width = function width() {
            return this.el_.offsetWidth;
        };

        /**
         * Get the current height of the HTML5 media element.
         *
         * @return {number}
         *         The heigth of the HTML5 media element.
         */


        Html5.prototype.height = function height() {
            return this.el_.offsetHeight;
        };

        /**
         * Proxy iOS `webkitbeginfullscreen` and `webkitendfullscreen` into
         * `fullscreenchange` event.
         *
         * @private
         * @fires fullscreenchange
         * @listens webkitendfullscreen
         * @listens webkitbeginfullscreen
         * @listens webkitbeginfullscreen
         */


        Html5.prototype.proxyWebkitFullscreen_ = function proxyWebkitFullscreen_() {
            var _this4 = this;

            if (!('webkitDisplayingFullscreen' in this.el_)) {
                return;
            }

            var endFn = function endFn() {
                this.trigger('fullscreenchange', { isFullscreen: false });
            };

            var beginFn = function beginFn() {
                if ('webkitPresentationMode' in this.el_ && this.el_.webkitPresentationMode !== 'picture-in-picture') {
                    this.one('webkitendfullscreen', endFn);

                    this.trigger('fullscreenchange', { isFullscreen: true });
                }
            };

            this.on('webkitbeginfullscreen', beginFn);
            this.on('dispose', function () {
                _this4.off('webkitbeginfullscreen', beginFn);
                _this4.off('webkitendfullscreen', endFn);
            });
        };

        /**
         * Check if fullscreen is supported on the current playback device.
         *
         * @return {boolean}
         *         - True if fullscreen is supported.
         *         - False if fullscreen is not supported.
         */


        Html5.prototype.supportsFullScreen = function supportsFullScreen() {
            if (typeof this.el_.webkitEnterFullScreen === 'function') {
                var userAgent = window_1.navigator && window_1.navigator.userAgent || '';

                // Seems to be broken in Chromium/Chrome && Safari in Leopard
                if (/Android/.test(userAgent) || !/Chrome|Mac OS X 10.5/.test(userAgent)) {
                    return true;
                }
            }
            return false;
        };

        /**
         * Request that the `HTML5` Tech enter fullscreen.
         */


        Html5.prototype.enterFullScreen = function enterFullScreen() {
            var video = this.el_;

            if (video.paused && video.networkState <= video.HAVE_METADATA) {
                // attempt to prime the video element for programmatic access
                // this isn't necessary on the desktop but shouldn't hurt
                this.el_.play();

                // playing and pausing synchronously during the transition to fullscreen
                // can get iOS ~6.1 devices into a play/pause loop
                this.setTimeout(function () {
                    video.pause();
                    video.webkitEnterFullScreen();
                }, 0);
            } else {
                video.webkitEnterFullScreen();
            }
        };

        /**
         * Request that the `HTML5` Tech exit fullscreen.
         */


        Html5.prototype.exitFullScreen = function exitFullScreen() {
            this.el_.webkitExitFullScreen();
        };

        /**
         * A getter/setter for the `Html5` Tech's source object.
         * > Note: Please use {@link Html5#setSource}
         *
         * @param {Tech~SourceObject} [src]
         *        The source object you want to set on the `HTML5` techs element.
         *
         * @return {Tech~SourceObject|undefined}
         *         - The current source object when a source is not passed in.
         *         - undefined when setting
         *
         * @deprecated Since version 5.
         */


        Html5.prototype.src = function src(_src) {
            if (_src === undefined) {
                return this.el_.src;
            }

            // Setting src through `src` instead of `setSrc` will be deprecated
            this.setSrc(_src);
        };

        /**
         * Reset the tech by removing all sources and then calling
         * {@link Html5.resetMediaElement}.
         */


        Html5.prototype.reset = function reset() {
            Html5.resetMediaElement(this.el_);
        };

        /**
         * Get the current source on the `HTML5` Tech. Falls back to returning the source from
         * the HTML5 media element.
         *
         * @return {Tech~SourceObject}
         *         The current source object from the HTML5 tech. With a fallback to the
         *         elements source.
         */


        Html5.prototype.currentSrc = function currentSrc() {
            if (this.currentSource_) {
                return this.currentSource_.src;
            }
            return this.el_.currentSrc;
        };

        /**
         * Set controls attribute for the HTML5 media Element.
         *
         * @param {string} val
         *        Value to set the controls attribute to
         */


        Html5.prototype.setControls = function setControls(val) {
            this.el_.controls = !!val;
        };

        /**
         * Create and returns a remote {@link TextTrack} object.
         *
         * @param {string} kind
         *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)
         *
         * @param {string} [label]
         *        Label to identify the text track
         *
         * @param {string} [language]
         *        Two letter language abbreviation
         *
         * @return {TextTrack}
         *         The TextTrack that gets created.
         */


        Html5.prototype.addTextTrack = function addTextTrack(kind, label, language) {
            if (!this.featuresNativeTextTracks) {
                return _Tech.prototype.addTextTrack.call(this, kind, label, language);
            }

            return this.el_.addTextTrack(kind, label, language);
        };

        /**
         * Creates either native TextTrack or an emulated TextTrack depending
         * on the value of `featuresNativeTextTracks`
         *
         * @param {Object} options
         *        The object should contain the options to intialize the TextTrack with.
         *
         * @param {string} [options.kind]
         *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata).
         *
         * @param {string} [options.label].
         *        Label to identify the text track
         *
         * @param {string} [options.language]
         *        Two letter language abbreviation.
         *
         * @param {boolean} [options.default]
         *        Default this track to on.
         *
         * @param {string} [options.id]
         *        The internal id to assign this track.
         *
         * @param {string} [options.src]
         *        A source url for the track.
         *
         * @return {HTMLTrackElement}
         *         The track element that gets created.
         */


        Html5.prototype.createRemoteTextTrack = function createRemoteTextTrack(options) {
            if (!this.featuresNativeTextTracks) {
                return _Tech.prototype.createRemoteTextTrack.call(this, options);
            }
            var htmlTrackElement = document_1.createElement('track');

            if (options.kind) {
                htmlTrackElement.kind = options.kind;
            }
            if (options.label) {
                htmlTrackElement.label = options.label;
            }
            if (options.language || options.srclang) {
                htmlTrackElement.srclang = options.language || options.srclang;
            }
            if (options['default']) {
                htmlTrackElement['default'] = options['default'];
            }
            if (options.id) {
                htmlTrackElement.id = options.id;
            }
            if (options.src) {
                htmlTrackElement.src = options.src;
            }

            return htmlTrackElement;
        };

        /**
         * Creates a remote text track object and returns an html track element.
         *
         * @param {Object} options The object should contain values for
         * kind, language, label, and src (location of the WebVTT file)
         * @param {Boolean} [manualCleanup=true] if set to false, the TextTrack will be
         * automatically removed from the video element whenever the source changes
         * @return {HTMLTrackElement} An Html Track Element.
         * This can be an emulated {@link HTMLTrackElement} or a native one.
         * @deprecated The default value of the "manualCleanup" parameter will default
         * to "false" in upcoming versions of Video.js
         */


        Html5.prototype.addRemoteTextTrack = function addRemoteTextTrack(options, manualCleanup) {
            var htmlTrackElement = _Tech.prototype.addRemoteTextTrack.call(this, options, manualCleanup);

            if (this.featuresNativeTextTracks) {
                this.el().appendChild(htmlTrackElement);
            }

            return htmlTrackElement;
        };

        /**
         * Remove remote `TextTrack` from `TextTrackList` object
         *
         * @param {TextTrack} track
         *        `TextTrack` object to remove
         */


        Html5.prototype.removeRemoteTextTrack = function removeRemoteTextTrack(track) {
            _Tech.prototype.removeRemoteTextTrack.call(this, track);

            if (this.featuresNativeTextTracks) {
                var tracks = this.$$('track');

                var i = tracks.length;

                while (i--) {
                    if (track === tracks[i] || track === tracks[i].track) {
                        this.el().removeChild(tracks[i]);
                    }
                }
            }
        };

        /**
         * Gets available media playback quality metrics as specified by the W3C's Media
         * Playback Quality API.
         *
         * @see [Spec]{@link https://wicg.github.io/media-playback-quality}
         *
         * @return {Object}
         *         An object with supported media playback quality metrics
         */


        Html5.prototype.getVideoPlaybackQuality = function getVideoPlaybackQuality() {
            if (typeof this.el().getVideoPlaybackQuality === 'function') {
                return this.el().getVideoPlaybackQuality();
            }

            var videoPlaybackQuality = {};

            if (typeof this.el().webkitDroppedFrameCount !== 'undefined' && typeof this.el().webkitDecodedFrameCount !== 'undefined') {
                videoPlaybackQuality.droppedVideoFrames = this.el().webkitDroppedFrameCount;
                videoPlaybackQuality.totalVideoFrames = this.el().webkitDecodedFrameCount;
            }

            if (window_1.performance && typeof window_1.performance.now === 'function') {
                videoPlaybackQuality.creationTime = window_1.performance.now();
            } else if (window_1.performance && window_1.performance.timing && typeof window_1.performance.timing.navigationStart === 'number') {
                videoPlaybackQuality.creationTime = window_1.Date.now() - window_1.performance.timing.navigationStart;
            }

            return videoPlaybackQuality;
        };

        return Html5;
    }(Tech);

    /* HTML5 Support Testing ---------------------------------------------------- */

    if (isReal()) {

        /**
         * Element for testing browser HTML5 media capabilities
         *
         * @type {Element}
         * @constant
         * @private
         */
        Html5.TEST_VID = document_1.createElement('video');
        var track = document_1.createElement('track');

        track.kind = 'captions';
        track.srclang = 'en';
        track.label = 'English';
        Html5.TEST_VID.appendChild(track);
    }

    /**
     * Check if HTML5 media is supported by this browser/device.
     *
     * @return {boolean}
     *         - True if HTML5 media is supported.
     *         - False if HTML5 media is not supported.
     */
    Html5.isSupported = function () {
        // IE9 with no Media Player is a LIAR! (#984)
        try {
            Html5.TEST_VID.volume = 0.5;
        } catch (e) {
            return false;
        }

        return !!(Html5.TEST_VID && Html5.TEST_VID.canPlayType);
    };

    /**
     * Check if the tech can support the given type
     *
     * @param {string} type
     *        The mimetype to check
     * @return {string} 'probably', 'maybe', or '' (empty string)
     */
    Html5.canPlayType = function (type) {
        return Html5.TEST_VID.canPlayType(type);
    };

    /**
     * Check if the tech can support the given source
     * @param {Object} srcObj
     *        The source object
     * @param {Object} options
     *        The options passed to the tech
     * @return {string} 'probably', 'maybe', or '' (empty string)
     */
    Html5.canPlaySource = function (srcObj, options) {
        return Html5.canPlayType(srcObj.type);
    };

    /**
     * Check if the volume can be changed in this browser/device.
     * Volume cannot be changed in a lot of mobile devices.
     * Specifically, it can't be changed from 1 on iOS.
     *
     * @return {boolean}
     *         - True if volume can be controlled
     *         - False otherwise
     */
    Html5.canControlVolume = function () {
        // IE will error if Windows Media Player not installed #3315
        try {
            var volume = Html5.TEST_VID.volume;

            Html5.TEST_VID.volume = volume / 2 + 0.1;
            return volume !== Html5.TEST_VID.volume;
        } catch (e) {
            return false;
        }
    };

    /**
     * Check if the playback rate can be changed in this browser/device.
     *
     * @return {boolean}
     *         - True if playback rate can be controlled
     *         - False otherwise
     */
    Html5.canControlPlaybackRate = function () {
        // Playback rate API is implemented in Android Chrome, but doesn't do anything
        // https://github.com/videojs/video.js/issues/3180
        if (IS_ANDROID && IS_CHROME && CHROME_VERSION < 58) {
            return false;
        }
        // IE will error if Windows Media Player not installed #3315
        try {
            var playbackRate = Html5.TEST_VID.playbackRate;

            Html5.TEST_VID.playbackRate = playbackRate / 2 + 0.1;
            return playbackRate !== Html5.TEST_VID.playbackRate;
        } catch (e) {
            return false;
        }
    };

    /**
     * Check to see if native `TextTrack`s are supported by this browser/device.
     *
     * @return {boolean}
     *         - True if native `TextTrack`s are supported.
     *         - False otherwise
     */
    Html5.supportsNativeTextTracks = function () {
        return IS_ANY_SAFARI;
    };

    /**
     * Check to see if native `VideoTrack`s are supported by this browser/device
     *
     * @return {boolean}
     *        - True if native `VideoTrack`s are supported.
     *        - False otherwise
     */
    Html5.supportsNativeVideoTracks = function () {
        return !!(Html5.TEST_VID && Html5.TEST_VID.videoTracks);
    };

    /**
     * Check to see if native `AudioTrack`s are supported by this browser/device
     *
     * @return {boolean}
     *        - True if native `AudioTrack`s are supported.
     *        - False otherwise
     */
    Html5.supportsNativeAudioTracks = function () {
        return !!(Html5.TEST_VID && Html5.TEST_VID.audioTracks);
    };

    /**
     * An array of events available on the Html5 tech.
     *
     * @private
     * @type {Array}
     */
    Html5.Events = ['loadstart', 'suspend', 'abort', 'error', 'emptied', 'stalled', 'loadedmetadata', 'loadeddata', 'canplay', 'canplaythrough', 'playing', 'waiting', 'seeking', 'seeked', 'ended', 'durationchange', 'timeupdate', 'progress', 'play', 'pause', 'ratechange', 'resize', 'volumechange'];

    /**
     * Boolean indicating whether the `Tech` supports volume control.
     *
     * @type {boolean}
     * @default {@link Html5.canControlVolume}
     */
    Html5.prototype.featuresVolumeControl = Html5.canControlVolume();

    /**
     * Boolean indicating whether the `Tech` supports changing the speed at which the media
     * plays. Examples:
     *   - Set player to play 2x (twice) as fast
     *   - Set player to play 0.5x (half) as fast
     *
     * @type {boolean}
     * @default {@link Html5.canControlPlaybackRate}
     */
    Html5.prototype.featuresPlaybackRate = Html5.canControlPlaybackRate();

    /**
     * Boolean indicating whether the `HTML5` tech currently supports the media element
     * moving in the DOM. iOS breaks if you move the media element, so this is set this to
     * false there. Everywhere else this should be true.
     *
     * @type {boolean}
     * @default
     */
    Html5.prototype.movingMediaElementInDOM = !IS_IOS;

// TODO: Previous comment: No longer appears to be used. Can probably be removed.
//       Is this true?
    /**
     * Boolean indicating whether the `HTML5` tech currently supports automatic media resize
     * when going into fullscreen.
     *
     * @type {boolean}
     * @default
     */
    Html5.prototype.featuresFullscreenResize = true;

    /**
     * Boolean indicating whether the `HTML5` tech currently supports the progress event.
     * If this is false, manual `progress` events will be triggred instead.
     *
     * @type {boolean}
     * @default
     */
    Html5.prototype.featuresProgressEvents = true;

    /**
     * Boolean indicating whether the `HTML5` tech currently supports the timeupdate event.
     * If this is false, manual `timeupdate` events will be triggred instead.
     *
     * @default
     */
    Html5.prototype.featuresTimeupdateEvents = true;

    /**
     * Boolean indicating whether the `HTML5` tech currently supports native `TextTrack`s.
     *
     * @type {boolean}
     * @default {@link Html5.supportsNativeTextTracks}
     */
    Html5.prototype.featuresNativeTextTracks = Html5.supportsNativeTextTracks();

    /**
     * Boolean indicating whether the `HTML5` tech currently supports native `VideoTrack`s.
     *
     * @type {boolean}
     * @default {@link Html5.supportsNativeVideoTracks}
     */
    Html5.prototype.featuresNativeVideoTracks = Html5.supportsNativeVideoTracks();

    /**
     * Boolean indicating whether the `HTML5` tech currently supports native `AudioTrack`s.
     *
     * @type {boolean}
     * @default {@link Html5.supportsNativeAudioTracks}
     */
    Html5.prototype.featuresNativeAudioTracks = Html5.supportsNativeAudioTracks();

// HTML5 Feature detection and Device Fixes --------------------------------- //
    var canPlayType = Html5.TEST_VID && Html5.TEST_VID.constructor.prototype.canPlayType;
    var mpegurlRE = /^application\/(?:x-|vnd\.apple\.)mpegurl/i;
    var mp4RE = /^video\/mp4/i;

    Html5.patchCanPlayType = function () {

        // Android 4.0 and above can play HLS to some extent but it reports being unable to do so
        if (ANDROID_VERSION >= 4.0 && !IS_FIREFOX) {
            Html5.TEST_VID.constructor.prototype.canPlayType = function (type) {
                if (type && mpegurlRE.test(type)) {
                    return 'maybe';
                }
                return canPlayType.call(this, type);
            };

            // Override Android 2.2 and less canPlayType method which is broken
        } else if (IS_OLD_ANDROID) {
            Html5.TEST_VID.constructor.prototype.canPlayType = function (type) {
                if (type && mp4RE.test(type)) {
                    return 'maybe';
                }
                return canPlayType.call(this, type);
            };
        }
    };

    Html5.unpatchCanPlayType = function () {
        var r = Html5.TEST_VID.constructor.prototype.canPlayType;

        Html5.TEST_VID.constructor.prototype.canPlayType = canPlayType;
        return r;
    };

// by default, patch the media element
    Html5.patchCanPlayType();

    Html5.disposeMediaElement = function (el) {
        if (!el) {
            return;
        }

        if (el.parentNode) {
            el.parentNode.removeChild(el);
        }

        // remove any child track or source nodes to prevent their loading
        while (el.hasChildNodes()) {
            el.removeChild(el.firstChild);
        }

        // remove any src reference. not setting `src=''` because that causes a warning
        // in firefox
        el.removeAttribute('src');

        // force the media element to update its loading state by calling load()
        // however IE on Windows 7N has a bug that throws an error so need a try/catch (#793)
        if (typeof el.load === 'function') {
            // wrapping in an iife so it's not deoptimized (#1060#discussion_r10324473)
            (function () {
                try {
                    el.load();
                } catch (e) {
                    // not supported
                }
            })();
        }
    };

    Html5.resetMediaElement = function (el) {
        if (!el) {
            return;
        }

        var sources = el.querySelectorAll('source');
        var i = sources.length;

        while (i--) {
            el.removeChild(sources[i]);
        }

        // remove any src reference.
        // not setting `src=''` because that throws an error
        el.removeAttribute('src');

        if (typeof el.load === 'function') {
            // wrapping in an iife so it's not deoptimized (#1060#discussion_r10324473)
            (function () {
                try {
                    el.load();
                } catch (e) {
                    // satisfy linter
                }
            })();
        }
    };

    /* Native HTML5 element property wrapping ----------------------------------- */
// Wrap native boolean attributes with getters that check both property and attribute
// The list is as followed:
// muted, defaultMuted, autoplay, controls, loop, playsinline
    [
        /**
         * Get the value of `muted` from the media element. `muted` indicates
         * that the volume for the media should be set to silent. This does not actually change
         * the `volume` attribute.
         *
         * @method Html5#muted
         * @return {boolean}
         *         - True if the value of `volume` should be ignored and the audio set to silent.
         *         - False if the value of `volume` should be used.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-muted}
         */
        'muted',

        /**
         * Get the value of `defaultMuted` from the media element. `defaultMuted` indicates
         * whether the media should start muted or not. Only changes the default state of the
         * media. `muted` and `defaultMuted` can have different values. {@link Html5#muted} indicates the
         * current state.
         *
         * @method Html5#defaultMuted
         * @return {boolean}
         *         - The value of `defaultMuted` from the media element.
         *         - True indicates that the media should start muted.
         *         - False indicates that the media should not start muted
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultmuted}
         */
        'defaultMuted',

        /**
         * Get the value of `autoplay` from the media element. `autoplay` indicates
         * that the media should start to play as soon as the page is ready.
         *
         * @method Html5#autoplay
         * @return {boolean}
         *         - The value of `autoplay` from the media element.
         *         - True indicates that the media should start as soon as the page loads.
         *         - False indicates that the media should not start as soon as the page loads.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-autoplay}
         */
        'autoplay',

        /**
         * Get the value of `controls` from the media element. `controls` indicates
         * whether the native media controls should be shown or hidden.
         *
         * @method Html5#controls
         * @return {boolean}
         *         - The value of `controls` from the media element.
         *         - True indicates that native controls should be showing.
         *         - False indicates that native controls should be hidden.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-controls}
         */
        'controls',

        /**
         * Get the value of `loop` from the media element. `loop` indicates
         * that the media should return to the start of the media and continue playing once
         * it reaches the end.
         *
         * @method Html5#loop
         * @return {boolean}
         *         - The value of `loop` from the media element.
         *         - True indicates that playback should seek back to start once
         *           the end of a media is reached.
         *         - False indicates that playback should not loop back to the start when the
         *           end of the media is reached.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-loop}
         */
        'loop',

        /**
         * Get the value of `playsinline` from the media element. `playsinline` indicates
         * to the browser that non-fullscreen playback is preferred when fullscreen
         * playback is the native default, such as in iOS Safari.
         *
         * @method Html5#playsinline
         * @return {boolean}
         *         - The value of `playsinline` from the media element.
         *         - True indicates that the media should play inline.
         *         - False indicates that the media should not play inline.
         *
         * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}
         */
        'playsinline'].forEach(function (prop) {
        Html5.prototype[prop] = function () {
            return this.el_[prop] || this.el_.hasAttribute(prop);
        };
    });

// Wrap native boolean attributes with setters that set both property and attribute
// The list is as followed:
// setMuted, setDefaultMuted, setAutoplay, setLoop, setPlaysinline
// setControls is special-cased above
    [
        /**
         * Set the value of `muted` on the media element. `muted` indicates that the current
         * audio level should be silent.
         *
         * @method Html5#setMuted
         * @param {boolean} muted
         *        - True if the audio should be set to silent
         *        - False otherwise
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-muted}
         */
        'muted',

        /**
         * Set the value of `defaultMuted` on the media element. `defaultMuted` indicates that the current
         * audio level should be silent, but will only effect the muted level on intial playback..
         *
         * @method Html5.prototype.setDefaultMuted
         * @param {boolean} defaultMuted
         *        - True if the audio should be set to silent
         *        - False otherwise
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultmuted}
         */
        'defaultMuted',

        /**
         * Set the value of `autoplay` on the media element. `autoplay` indicates
         * that the media should start to play as soon as the page is ready.
         *
         * @method Html5#setAutoplay
         * @param {boolean} autoplay
         *         - True indicates that the media should start as soon as the page loads.
         *         - False indicates that the media should not start as soon as the page loads.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-autoplay}
         */
        'autoplay',

        /**
         * Set the value of `loop` on the media element. `loop` indicates
         * that the media should return to the start of the media and continue playing once
         * it reaches the end.
         *
         * @method Html5#setLoop
         * @param {boolean} loop
         *         - True indicates that playback should seek back to start once
         *           the end of a media is reached.
         *         - False indicates that playback should not loop back to the start when the
         *           end of the media is reached.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-loop}
         */
        'loop',

        /**
         * Set the value of `playsinline` from the media element. `playsinline` indicates
         * to the browser that non-fullscreen playback is preferred when fullscreen
         * playback is the native default, such as in iOS Safari.
         *
         * @method Html5#setPlaysinline
         * @param {boolean} playsinline
         *         - True indicates that the media should play inline.
         *         - False indicates that the media should not play inline.
         *
         * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}
         */
        'playsinline'].forEach(function (prop) {
        Html5.prototype['set' + toTitleCase(prop)] = function (v) {
            this.el_[prop] = v;

            if (v) {
                this.el_.setAttribute(prop, prop);
            } else {
                this.el_.removeAttribute(prop);
            }
        };
    });

// Wrap native properties with a getter
// The list is as followed
// paused, currentTime, buffered, volume, poster, preload, error, seeking
// seekable, ended, playbackRate, defaultPlaybackRate, played, networkState
// readyState, videoWidth, videoHeight
    [
        /**
         * Get the value of `paused` from the media element. `paused` indicates whether the media element
         * is currently paused or not.
         *
         * @method Html5#paused
         * @return {boolean}
         *         The value of `paused` from the media element.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-paused}
         */
        'paused',

        /**
         * Get the value of `currentTime` from the media element. `currentTime` indicates
         * the current second that the media is at in playback.
         *
         * @method Html5#currentTime
         * @return {number}
         *         The value of `currentTime` from the media element.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-currenttime}
         */
        'currentTime',

        /**
         * Get the value of `buffered` from the media element. `buffered` is a `TimeRange`
         * object that represents the parts of the media that are already downloaded and
         * available for playback.
         *
         * @method Html5#buffered
         * @return {TimeRange}
         *         The value of `buffered` from the media element.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-buffered}
         */
        'buffered',

        /**
         * Get the value of `volume` from the media element. `volume` indicates
         * the current playback volume of audio for a media. `volume` will be a value from 0
         * (silent) to 1 (loudest and default).
         *
         * @method Html5#volume
         * @return {number}
         *         The value of `volume` from the media element. Value will be between 0-1.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-a-volume}
         */
        'volume',

        /**
         * Get the value of `poster` from the media element. `poster` indicates
         * that the url of an image file that can/will be shown when no media data is available.
         *
         * @method Html5#poster
         * @return {string}
         *         The value of `poster` from the media element. Value will be a url to an
         *         image.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-video-poster}
         */
        'poster',

        /**
         * Get the value of `preload` from the media element. `preload` indicates
         * what should download before the media is interacted with. It can have the following
         * values:
         * - none: nothing should be downloaded
         * - metadata: poster and the first few frames of the media may be downloaded to get
         *   media dimensions and other metadata
         * - auto: allow the media and metadata for the media to be downloaded before
         *    interaction
         *
         * @method Html5#preload
         * @return {string}
         *         The value of `preload` from the media element. Will be 'none', 'metadata',
         *         or 'auto'.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-preload}
         */
        'preload',

        /**
         * Get the value of the `error` from the media element. `error` indicates any
         * MediaError that may have occured during playback. If error returns null there is no
         * current error.
         *
         * @method Html5#error
         * @return {MediaError|null}
         *         The value of `error` from the media element. Will be `MediaError` if there
         *         is a current error and null otherwise.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-error}
         */
        'error',

        /**
         * Get the value of `seeking` from the media element. `seeking` indicates whether the
         * media is currently seeking to a new position or not.
         *
         * @method Html5#seeking
         * @return {boolean}
         *         - The value of `seeking` from the media element.
         *         - True indicates that the media is currently seeking to a new position.
         *         - Flase indicates that the media is not seeking to a new position at this time.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-seeking}
         */
        'seeking',

        /**
         * Get the value of `seekable` from the media element. `seekable` returns a
         * `TimeRange` object indicating ranges of time that can currently be `seeked` to.
         *
         * @method Html5#seekable
         * @return {TimeRange}
         *         The value of `seekable` from the media element. A `TimeRange` object
         *         indicating the current ranges of time that can be seeked to.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-seekable}
         */
        'seekable',

        /**
         * Get the value of `ended` from the media element. `ended` indicates whether
         * the media has reached the end or not.
         *
         * @method Html5#ended
         * @return {boolean}
         *         - The value of `ended` from the media element.
         *         - True indicates that the media has ended.
         *         - False indicates that the media has not ended.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-ended}
         */
        'ended',

        /**
         * Get the value of `playbackRate` from the media element. `playbackRate` indicates
         * the rate at which the media is currently playing back. Examples:
         *   - if playbackRate is set to 2, media will play twice as fast.
         *   - if playbackRate is set to 0.5, media will play half as fast.
         *
         * @method Html5#playbackRate
         * @return {number}
         *         The value of `playbackRate` from the media element. A number indicating
         *         the current playback speed of the media, where 1 is normal speed.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}
         */
        'playbackRate',

        /**
         * Get the value of `defaultPlaybackRate` from the media element. `defaultPlaybackRate` indicates
         * the rate at which the media is currently playing back. This value will not indicate the current
         * `playbackRate` after playback has started, use {@link Html5#playbackRate} for that.
         *
         * Examples:
         *   - if defaultPlaybackRate is set to 2, media will play twice as fast.
         *   - if defaultPlaybackRate is set to 0.5, media will play half as fast.
         *
         * @method Html5.prototype.defaultPlaybackRate
         * @return {number}
         *         The value of `defaultPlaybackRate` from the media element. A number indicating
         *         the current playback speed of the media, where 1 is normal speed.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}
         */
        'defaultPlaybackRate',

        /**
         * Get the value of `played` from the media element. `played` returns a `TimeRange`
         * object representing points in the media timeline that have been played.
         *
         * @method Html5#played
         * @return {TimeRange}
         *         The value of `played` from the media element. A `TimeRange` object indicating
         *         the ranges of time that have been played.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-played}
         */
        'played',

        /**
         * Get the value of `networkState` from the media element. `networkState` indicates
         * the current network state. It returns an enumeration from the following list:
         * - 0: NETWORK_EMPTY
         * - 1: NEWORK_IDLE
         * - 2: NETWORK_LOADING
         * - 3: NETWORK_NO_SOURCE
         *
         * @method Html5#networkState
         * @return {number}
         *         The value of `networkState` from the media element. This will be a number
         *         from the list in the description.
         *
         * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-networkstate}
         */
        'networkState',

        /**
         * Get the value of `readyState` from the media element. `readyState` indicates
         * the current state of the media element. It returns an enumeration from the
         * following list:
         * - 0: HAVE_NOTHING
         * - 1: HAVE_METADATA
         * - 2: HAVE_CURRENT_DATA
         * - 3: HAVE_FUTURE_DATA
         * - 4: HAVE_ENOUGH_DATA
         *
         * @method Html5#readyState
         * @return {number}
         *         The value of `readyState` from the media element. This will be a number
         *         from the list in the description.
         *
         * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#ready-states}
         */
        'readyState',

        /**
         * Get the value of `videoWidth` from the video element. `videoWidth` indicates
         * the current width of the video in css pixels.
         *
         * @method Html5#videoWidth
         * @return {number}
         *         The value of `videoWidth` from the video element. This will be a number
         *         in css pixels.
         *
         * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-video-videowidth}
         */
        'videoWidth',

        /**
         * Get the value of `videoHeight` from the video element. `videoHeigth` indicates
         * the current height of the video in css pixels.
         *
         * @method Html5#videoHeight
         * @return {number}
         *         The value of `videoHeight` from the video element. This will be a number
         *         in css pixels.
         *
         * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-video-videowidth}
         */
        'videoHeight'].forEach(function (prop) {
        Html5.prototype[prop] = function () {
            return this.el_[prop];
        };
    });

// Wrap native properties with a setter in this format:
// set + toTitleCase(name)
// The list is as follows:
// setVolume, setSrc, setPoster, setPreload, setPlaybackRate, setDefaultPlaybackRate
    [
        /**
         * Set the value of `volume` on the media element. `volume` indicates the current
         * audio level as a percentage in decimal form. This means that 1 is 100%, 0.5 is 50%, and
         * so on.
         *
         * @method Html5#setVolume
         * @param {number} percentAsDecimal
         *        The volume percent as a decimal. Valid range is from 0-1.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-a-volume}
         */
        'volume',

        /**
         * Set the value of `src` on the media element. `src` indicates the current
         * {@link Tech~SourceObject} for the media.
         *
         * @method Html5#setSrc
         * @param {Tech~SourceObject} src
         *        The source object to set as the current source.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-src}
         */
        'src',

        /**
         * Set the value of `poster` on the media element. `poster` is the url to
         * an image file that can/will be shown when no media data is available.
         *
         * @method Html5#setPoster
         * @param {string} poster
         *        The url to an image that should be used as the `poster` for the media
         *        element.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-poster}
         */
        'poster',

        /**
         * Set the value of `preload` on the media element. `preload` indicates
         * what should download before the media is interacted with. It can have the following
         * values:
         * - none: nothing should be downloaded
         * - metadata: poster and the first few frames of the media may be downloaded to get
         *   media dimensions and other metadata
         * - auto: allow the media and metadata for the media to be downloaded before
         *    interaction
         *
         * @method Html5#setPreload
         * @param {string} preload
         *         The value of `preload` to set on the media element. Must be 'none', 'metadata',
         *         or 'auto'.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-preload}
         */
        'preload',

        /**
         * Set the value of `playbackRate` on the media element. `playbackRate` indicates
         * the rate at which the media should play back. Examples:
         *   - if playbackRate is set to 2, media will play twice as fast.
         *   - if playbackRate is set to 0.5, media will play half as fast.
         *
         * @method Html5#setPlaybackRate
         * @return {number}
         *         The value of `playbackRate` from the media element. A number indicating
         *         the current playback speed of the media, where 1 is normal speed.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}
         */
        'playbackRate',

        /**
         * Set the value of `defaultPlaybackRate` on the media element. `defaultPlaybackRate` indicates
         * the rate at which the media should play back upon initial startup. Changing this value
         * after a video has started will do nothing. Instead you should used {@link Html5#setPlaybackRate}.
         *
         * Example Values:
         *   - if playbackRate is set to 2, media will play twice as fast.
         *   - if playbackRate is set to 0.5, media will play half as fast.
         *
         * @method Html5.prototype.setDefaultPlaybackRate
         * @return {number}
         *         The value of `defaultPlaybackRate` from the media element. A number indicating
         *         the current playback speed of the media, where 1 is normal speed.
         *
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultplaybackrate}
         */
        'defaultPlaybackRate'].forEach(function (prop) {
        Html5.prototype['set' + toTitleCase(prop)] = function (v) {
            this.el_[prop] = v;
        };
    });

// wrap native functions with a function
// The list is as follows:
// pause, load play
    [
        /**
         * A wrapper around the media elements `pause` function. This will call the `HTML5`
         * media elements `pause` function.
         *
         * @method Html5#pause
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-pause}
         */
        'pause',

        /**
         * A wrapper around the media elements `load` function. This will call the `HTML5`s
         * media element `load` function.
         *
         * @method Html5#load
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-load}
         */
        'load',

        /**
         * A wrapper around the media elements `play` function. This will call the `HTML5`s
         * media element `play` function.
         *
         * @method Html5#play
         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-play}
         */
        'play'].forEach(function (prop) {
        Html5.prototype[prop] = function () {
            return this.el_[prop]();
        };
    });

    Tech.withSourceHandlers(Html5);

    /**
     * Native source handler for Html5, simply passes the source to the media element.
     *
     * @proprety {Tech~SourceObject} source
     *        The source object
     *
     * @proprety {Html5} tech
     *        The instance of the HTML5 tech.
     */
    Html5.nativeSourceHandler = {};

    /**
     * Check if the media element can play the given mime type.
     *
     * @param {string} type
     *        The mimetype to check
     *
     * @return {string}
     *         'probably', 'maybe', or '' (empty string)
     */
    Html5.nativeSourceHandler.canPlayType = function (type) {
        // IE9 on Windows 7 without MediaPlayer throws an error here
        // https://github.com/videojs/video.js/issues/519
        try {
            return Html5.TEST_VID.canPlayType(type);
        } catch (e) {
            return '';
        }
    };

    /**
     * Check if the media element can handle a source natively.
     *
     * @param {Tech~SourceObject} source
     *         The source object
     *
     * @param {Object} [options]
     *         Options to be passed to the tech.
     *
     * @return {string}
     *         'probably', 'maybe', or '' (empty string).
     */
    Html5.nativeSourceHandler.canHandleSource = function (source, options) {

        // If a type was provided we should rely on that
        if (source.type) {
            return Html5.nativeSourceHandler.canPlayType(source.type);

            // If no type, fall back to checking 'video/[EXTENSION]'
        } else if (source.src) {
            var ext = getFileExtension(source.src);

            return Html5.nativeSourceHandler.canPlayType('video/' + ext);
        }

        return '';
    };

    /**
     * Pass the source to the native media element.
     *
     * @param {Tech~SourceObject} source
     *        The source object
     *
     * @param {Html5} tech
     *        The instance of the Html5 tech
     *
     * @param {Object} [options]
     *        The options to pass to the source
     */
    Html5.nativeSourceHandler.handleSource = function (source, tech, options) {
        tech.setSrc(source.src);
    };

    /**
     * A noop for the native dispose function, as cleanup is not needed.
     */
    Html5.nativeSourceHandler.dispose = function () {};

// Register the native source handler
    Html5.registerSourceHandler(Html5.nativeSourceHandler);

    Tech.registerTech('Html5', Html5);

    var _templateObject$1 = taggedTemplateLiteralLoose(['\n        Using the tech directly can be dangerous. I hope you know what you\'re doing.\n        See https://github.com/videojs/video.js/issues/2617 for more info.\n      '], ['\n        Using the tech directly can be dangerous. I hope you know what you\'re doing.\n        See https://github.com/videojs/video.js/issues/2617 for more info.\n      ']);

    /**
     * @file player.js
     */
// Subclasses Component
// The following imports are used only to ensure that the corresponding modules
// are always included in the video.js package. Importing the modules will
// execute them and they will register themselves with video.js.
// Import Html5 tech, at least for disposing the original video tag.
// The following tech events are simply re-triggered
// on the player when they happen
    var TECH_EVENTS_RETRIGGER = [
        /**
         * Fired while the user agent is downloading media data.
         *
         * @event Player#progress
         * @type {EventTarget~Event}
         */
        /**
         * Retrigger the `progress` event that was triggered by the {@link Tech}.
         *
         * @private
         * @method Player#handleTechProgress_
         * @fires Player#progress
         * @listens Tech#progress
         */
        'progress',

        /**
         * Fires when the loading of an audio/video is aborted.
         *
         * @event Player#abort
         * @type {EventTarget~Event}
         */
        /**
         * Retrigger the `abort` event that was triggered by the {@link Tech}.
         *
         * @private
         * @method Player#handleTechAbort_
         * @fires Player#abort
         * @listens Tech#abort
         */
        'abort',

        /**
         * Fires when the browser is intentionally not getting media data.
         *
         * @event Player#suspend
         * @type {EventTarget~Event}
         */
        /**
         * Retrigger the `suspend` event that was triggered by the {@link Tech}.
         *
         * @private
         * @method Player#handleTechSuspend_
         * @fires Player#suspend
         * @listens Tech#suspend
         */
        'suspend',

        /**
         * Fires when the current playlist is empty.
         *
         * @event Player#emptied
         * @type {EventTarget~Event}
         */
        /**
         * Retrigger the `emptied` event that was triggered by the {@link Tech}.
         *
         * @private
         * @method Player#handleTechEmptied_
         * @fires Player#emptied
         * @listens Tech#emptied
         */
        'emptied',
        /**
         * Fires when the browser is trying to get media data, but data is not available.
         *
         * @event Player#stalled
         * @type {EventTarget~Event}
         */
        /**
         * Retrigger the `stalled` event that was triggered by the {@link Tech}.
         *
         * @private
         * @method Player#handleTechStalled_
         * @fires Player#stalled
         * @listens Tech#stalled
         */
        'stalled',

        /**
         * Fires when the browser has loaded meta data for the audio/video.
         *
         * @event Player#loadedmetadata
         * @type {EventTarget~Event}
         */
        /**
         * Retrigger the `stalled` event that was triggered by the {@link Tech}.
         *
         * @private
         * @method Player#handleTechLoadedmetadata_
         * @fires Player#loadedmetadata
         * @listens Tech#loadedmetadata
         */
        'loadedmetadata',

        /**
         * Fires when the browser has loaded the current frame of the audio/video.
         *
         * @event Player#loadeddata
         * @type {event}
         */
        /**
         * Retrigger the `loadeddata` event that was triggered by the {@link Tech}.
         *
         * @private
         * @method Player#handleTechLoaddeddata_
         * @fires Player#loadeddata
         * @listens Tech#loadeddata
         */
        'loadeddata',

        /**
         * Fires when the current playback position has changed.
         *
         * @event Player#timeupdate
         * @type {event}
         */
        /**
         * Retrigger the `timeupdate` event that was triggered by the {@link Tech}.
         *
         * @private
         * @method Player#handleTechTimeUpdate_
         * @fires Player#timeupdate
         * @listens Tech#timeupdate
         */
        'timeupdate',

        /**
         * Fires when the playing speed of the audio/video is changed
         *
         * @event Player#ratechange
         * @type {event}
         */
        /**
         * Retrigger the `ratechange` event that was triggered by the {@link Tech}.
         *
         * @private
         * @method Player#handleTechRatechange_
         * @fires Player#ratechange
         * @listens Tech#ratechange
         */
        'ratechange',

        /**
         * Fires when the video's intrinsic dimensions change
         *
         * @event Player#resize
         * @type {event}
         */
        /**
         * Retrigger the `resize` event that was triggered by the {@link Tech}.
         *
         * @private
         * @method Player#handleTechResize_
         * @fires Player#resize
         * @listens Tech#resize
         */
        'resize',

        /**
         * Fires when the volume has been changed
         *
         * @event Player#volumechange
         * @type {event}
         */
        /**
         * Retrigger the `volumechange` event that was triggered by the {@link Tech}.
         *
         * @private
         * @method Player#handleTechVolumechange_
         * @fires Player#volumechange
         * @listens Tech#volumechange
         */
        'volumechange',

        /**
         * Fires when the text track has been changed
         *
         * @event Player#texttrackchange
         * @type {event}
         */
        /**
         * Retrigger the `texttrackchange` event that was triggered by the {@link Tech}.
         *
         * @private
         * @method Player#handleTechTexttrackchange_
         * @fires Player#texttrackchange
         * @listens Tech#texttrackchange
         */
        'texttrackchange'];

    /**
     * An instance of the `Player` class is created when any of the Video.js setup methods
     * are used to initialize a video.
     *
     * After an instance has been created it can be accessed globally in two ways:
     * 1. By calling `videojs('example_video_1');`
     * 2. By using it directly via  `videojs.players.example_video_1;`
     *
     * @extends Component
     */

    var Player = function (_Component) {
        inherits(Player, _Component);

        /**
         * Create an instance of this class.
         *
         * @param {Element} tag
         *        The original video DOM element used for configuring options.
         *
         * @param {Object} [options]
         *        Object of option names and values.
         *
         * @param {Component~ReadyCallback} [ready]
         *        Ready callback function.
         */
        function Player(tag, options, ready) {
            classCallCheck(this, Player);

            // Make sure tag ID exists
            tag.id = tag.id || 'vjs_video_' + newGUID();

            // Set Options
            // The options argument overrides options set in the video tag
            // which overrides globally set options.
            // This latter part coincides with the load order
            // (tag must exist before Player)
            options = assign(Player.getTagSettings(tag), options);

            // Delay the initialization of children because we need to set up
            // player properties first, and can't use `this` before `super()`
            options.initChildren = false;

            // Same with creating the element
            options.createEl = false;

            // we don't want the player to report touch activity on itself
            // see enableTouchActivity in Component
            options.reportTouchActivity = false;

            // If language is not set, get the closest lang attribute
            if (!options.language) {
                if (typeof tag.closest === 'function') {
                    var closest = tag.closest('[lang]');

                    if (closest) {
                        options.language = closest.getAttribute('lang');
                    }
                } else {
                    var element = tag;

                    while (element && element.nodeType === 1) {
                        if (getAttributes(element).hasOwnProperty('lang')) {
                            options.language = element.getAttribute('lang');
                            break;
                        }
                        element = element.parentNode;
                    }
                }
            }

            // Run base component initializing with new options

            // Turn off API access because we're loading a new tech that might load asynchronously
            var _this = possibleConstructorReturn(this, _Component.call(this, null, options, ready));

            _this.isReady_ = false;

            // if the global option object was accidentally blown away by
            // someone, bail early with an informative error
            if (!_this.options_ || !_this.options_.techOrder || !_this.options_.techOrder.length) {
                throw new Error('No techOrder specified. Did you overwrite ' + 'videojs.options instead of just changing the ' + 'properties you want to override?');
            }

            // Store the original tag used to set options
            _this.tag = tag;

            // Store the tag attributes used to restore html5 element
            _this.tagAttributes = tag && getAttributes(tag);

            // Update current language
            _this.language(_this.options_.language);

            // Update Supported Languages
            if (options.languages) {
                // Normalise player option languages to lowercase
                var languagesToLower = {};

                Object.getOwnPropertyNames(options.languages).forEach(function (name$$1) {
                    languagesToLower[name$$1.toLowerCase()] = options.languages[name$$1];
                });
                _this.languages_ = languagesToLower;
            } else {
                _this.languages_ = Player.prototype.options_.languages;
            }

            // Cache for video property values.
            _this.cache_ = {};

            // Set poster
            _this.poster_ = options.poster || '';

            // Set controls
            _this.controls_ = !!options.controls;

            // Set default values for lastVolume
            _this.cache_.lastVolume = 1;

            // Original tag settings stored in options
            // now remove immediately so native controls don't flash.
            // May be turned back on by HTML5 tech if nativeControlsForTouch is true
            tag.controls = false;

            /*
             * Store the internal state of scrubbing
             *
             * @private
             * @return {Boolean} True if the user is scrubbing
             */
            _this.scrubbing_ = false;

            _this.el_ = _this.createEl();

            // Make this an evented object and use `el_` as its event bus.
            evented(_this, { eventBusKey: 'el_' });

            // We also want to pass the original player options to each component and plugin
            // as well so they don't need to reach back into the player for options later.
            // We also need to do another copy of this.options_ so we don't end up with
            // an infinite loop.
            var playerOptionsCopy = mergeOptions(_this.options_);

            // Load plugins
            if (options.plugins) {
                var plugins = options.plugins;

                Object.keys(plugins).forEach(function (name$$1) {
                    if (typeof this[name$$1] === 'function') {
                        this[name$$1](plugins[name$$1]);
                    } else {
                        throw new Error('plugin "' + name$$1 + '" does not exist');
                    }
                }, _this);
            }

            _this.options_.playerOptions = playerOptionsCopy;

            _this.middleware_ = [];

            _this.initChildren();

            // Set isAudio based on whether or not an audio tag was used
            _this.isAudio(tag.nodeName.toLowerCase() === 'audio');

            // Update controls className. Can't do this when the controls are initially
            // set because the element doesn't exist yet.
            if (_this.controls()) {
                _this.addClass('vjs-controls-enabled');
            } else {
                _this.addClass('vjs-controls-disabled');
            }

            // Set ARIA label and region role depending on player type
            _this.el_.setAttribute('role', 'region');
            if (_this.isAudio()) {
                _this.el_.setAttribute('aria-label', _this.localize('Audio Player'));
            } else {
                _this.el_.setAttribute('aria-label', _this.localize('Video Player'));
            }

            if (_this.isAudio()) {
                _this.addClass('vjs-audio');
            }

            if (_this.flexNotSupported_()) {
                _this.addClass('vjs-no-flex');
            }

            // TODO: Make this smarter. Toggle user state between touching/mousing
            // using events, since devices can have both touch and mouse events.
            // if (browser.TOUCH_ENABLED) {
            //   this.addClass('vjs-touch-enabled');
            // }

            // iOS Safari has broken hover handling
            if (!IS_IOS) {
                _this.addClass('vjs-workinghover');
            }

            // Make player easily findable by ID
            Player.players[_this.id_] = _this;

            // Add a major version class to aid css in plugins
            var majorVersion = version.split('.')[0];

            _this.addClass('vjs-v' + majorVersion);

            // When the player is first initialized, trigger activity so components
            // like the control bar show themselves if needed
            _this.userActive(true);
            _this.reportUserActivity();
            _this.listenForUserActivity_();

            _this.on('fullscreenchange', _this.handleFullscreenChange_);
            _this.on('stageclick', _this.handleStageClick_);

            _this.changingSrc_ = false;
            return _this;
        }

        /**
         * Destroys the video player and does any necessary cleanup.
         *
         * This is especially helpful if you are dynamically adding and removing videos
         * to/from the DOM.
         *
         * @fires Player#dispose
         */


        Player.prototype.dispose = function dispose() {
            /**
             * Called when the player is being disposed of.
             *
             * @event Player#dispose
             * @type {EventTarget~Event}
             */
            this.trigger('dispose');
            // prevent dispose from being called twice
            this.off('dispose');

            if (this.styleEl_ && this.styleEl_.parentNode) {
                this.styleEl_.parentNode.removeChild(this.styleEl_);
            }

            // Kill reference to this player
            Player.players[this.id_] = null;

            if (this.tag && this.tag.player) {
                this.tag.player = null;
            }

            if (this.el_ && this.el_.player) {
                this.el_.player = null;
            }

            if (this.tech_) {
                this.tech_.dispose();
            }

            _Component.prototype.dispose.call(this);
        };

        /**
         * Create the `Player`'s DOM element.
         *
         * @return {Element}
         *         The DOM element that gets created.
         */


        Player.prototype.createEl = function createEl$$1() {
            var tag = this.tag;
            var el = void 0;
            var playerElIngest = this.playerElIngest_ = tag.parentNode && tag.parentNode.hasAttribute && tag.parentNode.hasAttribute('data-vjs-player');

            if (playerElIngest) {
                el = this.el_ = tag.parentNode;
            } else {
                el = this.el_ = _Component.prototype.createEl.call(this, 'div');
            }

            // set tabindex to -1 so we could focus on the player element
            tag.setAttribute('tabindex', '-1');

            // Remove width/height attrs from tag so CSS can make it 100% width/height
            tag.removeAttribute('width');
            tag.removeAttribute('height');

            // Copy over all the attributes from the tag, including ID and class
            // ID will now reference player box, not the video tag
            var attrs = getAttributes(tag);

            Object.getOwnPropertyNames(attrs).forEach(function (attr) {
                // workaround so we don't totally break IE7
                // http://stackoverflow.com/questions/3653444/css-styles-not-applied-on-dynamic-elements-in-internet-explorer-7
                if (attr === 'class') {
                    el.className += ' ' + attrs[attr];
                } else {
                    el.setAttribute(attr, attrs[attr]);
                }
            });

            // Update tag id/class for use as HTML5 playback tech
            // Might think we should do this after embedding in container so .vjs-tech class
            // doesn't flash 100% width/height, but class only applies with .video-js parent
            tag.playerId = tag.id;
            tag.id += '_html5_api';
            tag.className = 'vjs-tech';

            // Make player findable on elements
            tag.player = el.player = this;
            // Default state of video is paused
            this.addClass('vjs-paused');

            // Add a style element in the player that we'll use to set the width/height
            // of the player in a way that's still overrideable by CSS, just like the
            // video element
            if (window_1.VIDEOJS_NO_DYNAMIC_STYLE !== true) {
                this.styleEl_ = createStyleElement('vjs-styles-dimensions');
                var defaultsStyleEl = $('.vjs-styles-defaults');
                var head = $('head');

                head.insertBefore(this.styleEl_, defaultsStyleEl ? defaultsStyleEl.nextSibling : head.firstChild);
            }

            // Pass in the width/height/aspectRatio options which will update the style el
            this.width(this.options_.width);
            this.height(this.options_.height);
            this.fluid(this.options_.fluid);
            this.aspectRatio(this.options_.aspectRatio);

            // Hide any links within the video/audio tag, because IE doesn't hide them completely.
            var links = tag.getElementsByTagName('a');

            for (var i = 0; i < links.length; i++) {
                var linkEl = links.item(i);

                addClass(linkEl, 'vjs-hidden');
                linkEl.setAttribute('hidden', 'hidden');
            }

            // insertElFirst seems to cause the networkState to flicker from 3 to 2, so
            // keep track of the original for later so we can know if the source originally failed
            tag.initNetworkState_ = tag.networkState;

            // Wrap video tag in div (el/box) container
            if (tag.parentNode && !playerElIngest) {
                tag.parentNode.insertBefore(el, tag);
            }

            // insert the tag as the first child of the player element
            // then manually add it to the children array so that this.addChild
            // will work properly for other components
            //
            // Breaks iPhone, fixed in HTML5 setup.
            prependTo(tag, el);
            this.children_.unshift(tag);

            // Set lang attr on player to ensure CSS :lang() in consistent with player
            // if it's been set to something different to the doc
            this.el_.setAttribute('lang', this.language_);

            this.el_ = el;

            return el;
        };

        /**
         * A getter/setter for the `Player`'s width. Returns the player's configured value.
         * To get the current width use `currentWidth()`.
         *
         * @param {number} [value]
         *        The value to set the `Player`'s width to.
         *
         * @return {number}
         *         The current width of the `Player` when getting.
         */


        Player.prototype.width = function width(value) {
            return this.dimension('width', value);
        };

        /**
         * A getter/setter for the `Player`'s height. Returns the player's configured value.
         * To get the current height use `currentheight()`.
         *
         * @param {number} [value]
         *        The value to set the `Player`'s heigth to.
         *
         * @return {number}
         *         The current height of the `Player` when getting.
         */


        Player.prototype.height = function height(value) {
            return this.dimension('height', value);
        };

        /**
         * A getter/setter for the `Player`'s width & height.
         *
         * @param {string} dimension
         *        This string can be:
         *        - 'width'
         *        - 'height'
         *
         * @param {number} [value]
         *        Value for dimension specified in the first argument.
         *
         * @return {number}
         *         The dimension arguments value when getting (width/height).
         */


        Player.prototype.dimension = function dimension(_dimension, value) {
            var privDimension = _dimension + '_';

            if (value === undefined) {
                return this[privDimension] || 0;
            }

            if (value === '') {
                // If an empty string is given, reset the dimension to be automatic
                this[privDimension] = undefined;
            } else {
                var parsedVal = parseFloat(value);

                if (isNaN(parsedVal)) {
                    log$1.error('Improper value "' + value + '" supplied for for ' + _dimension);
                    return;
                }

                this[privDimension] = parsedVal;
            }

            this.updateStyleEl_();
        };

        /**
         * A getter/setter/toggler for the vjs-fluid `className` on the `Player`.
         *
         * @param {boolean} [bool]
         *        - A value of true adds the class.
         *        - A value of false removes the class.
         *        - No value will toggle the fluid class.
         *
         * @return {boolean|undefined}
         *         - The value of fluid when getting.
         *         - `undefined` when setting.
         */


        Player.prototype.fluid = function fluid(bool) {
            if (bool === undefined) {
                return !!this.fluid_;
            }

            this.fluid_ = !!bool;

            if (bool) {
                this.addClass('vjs-fluid');
            } else {
                this.removeClass('vjs-fluid');
            }

            this.updateStyleEl_();
        };

        /**
         * Get/Set the aspect ratio
         *
         * @param {string} [ratio]
         *        Aspect ratio for player
         *
         * @return {string|undefined}
         *         returns the current aspect ratio when getting
         */

        /**
         * A getter/setter for the `Player`'s aspect ratio.
         *
         * @param {string} [ratio]
         *        The value to set the `Player's aspect ratio to.
         *
         * @return {string|undefined}
         *         - The current aspect ratio of the `Player` when getting.
         *         - undefined when setting
         */


        Player.prototype.aspectRatio = function aspectRatio(ratio) {
            if (ratio === undefined) {
                return this.aspectRatio_;
            }

            // Check for width:height format
            if (!/^\d+\:\d+$/.test(ratio)) {
                throw new Error('Improper value supplied for aspect ratio. The format should be width:height, for example 16:9.');
            }
            this.aspectRatio_ = ratio;

            // We're assuming if you set an aspect ratio you want fluid mode,
            // because in fixed mode you could calculate width and height yourself.
            this.fluid(true);

            this.updateStyleEl_();
        };

        /**
         * Update styles of the `Player` element (height, width and aspect ratio).
         *
         * @private
         * @listens Tech#loadedmetadata
         */


        Player.prototype.updateStyleEl_ = function updateStyleEl_() {
            if (window_1.VIDEOJS_NO_DYNAMIC_STYLE === true) {
                var _width = typeof this.width_ === 'number' ? this.width_ : this.options_.width;
                var _height = typeof this.height_ === 'number' ? this.height_ : this.options_.height;
                var techEl = this.tech_ && this.tech_.el();

                if (techEl) {
                    if (_width >= 0) {
                        techEl.width = _width;
                    }
                    if (_height >= 0) {
                        techEl.height = _height;
                    }
                }

                return;
            }

            var width = void 0;
            var height = void 0;
            var aspectRatio = void 0;
            var idClass = void 0;

            // The aspect ratio is either used directly or to calculate width and height.
            if (this.aspectRatio_ !== undefined && this.aspectRatio_ !== 'auto') {
                // Use any aspectRatio that's been specifically set
                aspectRatio = this.aspectRatio_;
            } else if (this.videoWidth() > 0) {
                // Otherwise try to get the aspect ratio from the video metadata
                aspectRatio = this.videoWidth() + ':' + this.videoHeight();
            } else {
                // Or use a default. The video element's is 2:1, but 16:9 is more common.
                aspectRatio = '16:9';
            }

            // Get the ratio as a decimal we can use to calculate dimensions
            var ratioParts = aspectRatio.split(':');
            var ratioMultiplier = ratioParts[1] / ratioParts[0];

            if (this.width_ !== undefined) {
                // Use any width that's been specifically set
                width = this.width_;
            } else if (this.height_ !== undefined) {
                // Or calulate the width from the aspect ratio if a height has been set
                width = this.height_ / ratioMultiplier;
            } else {
                // Or use the video's metadata, or use the video el's default of 300
                width = this.videoWidth() || 300;
            }

            if (this.height_ !== undefined) {
                // Use any height that's been specifically set
                height = this.height_;
            } else {
                // Otherwise calculate the height from the ratio and the width
                height = width * ratioMultiplier;
            }

            // Ensure the CSS class is valid by starting with an alpha character
            if (/^[^a-zA-Z]/.test(this.id())) {
                idClass = 'dimensions-' + this.id();
            } else {
                idClass = this.id() + '-dimensions';
            }

            // Ensure the right class is still on the player for the style element
            this.addClass(idClass);

            setTextContent(this.styleEl_, '\n      .' + idClass + ' {\n        width: ' + width + 'px;\n        height: ' + height + 'px;\n      }\n\n      .' + idClass + '.vjs-fluid {\n        padding-top: ' + ratioMultiplier * 100 + '%;\n      }\n    ');
        };

        /**
         * Load/Create an instance of playback {@link Tech} including element
         * and API methods. Then append the `Tech` element in `Player` as a child.
         *
         * @param {string} techName
         *        name of the playback technology
         *
         * @param {string} source
         *        video source
         *
         * @private
         */


        Player.prototype.loadTech_ = function loadTech_(techName, source) {
            var _this2 = this;

            // Pause and remove current playback technology
            if (this.tech_) {
                this.unloadTech_();
            }

            var titleTechName = toTitleCase(techName);
            var camelTechName = techName.charAt(0).toLowerCase() + techName.slice(1);

            // get rid of the HTML5 video tag as soon as we are using another tech
            if (titleTechName !== 'Html5' && this.tag) {
                Tech.getTech('Html5').disposeMediaElement(this.tag);
                this.tag.player = null;
                this.tag = null;
            }

            this.techName_ = titleTechName;

            // Turn off API access because we're loading a new tech that might load asynchronously
            this.isReady_ = false;

            // Grab tech-specific options from player options and add source and parent element to use.
            var techOptions = {
                source: source,
                'nativeControlsForTouch': this.options_.nativeControlsForTouch,
                'playerId': this.id(),
                'techId': this.id() + '_' + titleTechName + '_api',
                'autoplay': this.options_.autoplay,
                'playsinline': this.options_.playsinline,
                'preload': this.options_.preload,
                'loop': this.options_.loop,
                'muted': this.options_.muted,
                'poster': this.poster(),
                'language': this.language(),
                'playerElIngest': this.playerElIngest_ || false,
                'vtt.js': this.options_['vtt.js']
            };

            ALL.names.forEach(function (name$$1) {
                var props = ALL[name$$1];

                techOptions[props.getterName] = _this2[props.privateName];
            });

            assign(techOptions, this.options_[titleTechName]);
            assign(techOptions, this.options_[camelTechName]);
            assign(techOptions, this.options_[techName.toLowerCase()]);

            if (this.tag) {
                techOptions.tag = this.tag;
            }

            if (source && source.src === this.cache_.src && this.cache_.currentTime > 0) {
                techOptions.startTime = this.cache_.currentTime;
            }

            // Initialize tech instance
            var TechClass = Tech.getTech(techName);

            if (!TechClass) {
                throw new Error('No Tech named \'' + titleTechName + '\' exists! \'' + titleTechName + '\' should be registered using videojs.registerTech()\'');
            }

            this.tech_ = new TechClass(techOptions);

            // player.triggerReady is always async, so don't need this to be async
            this.tech_.ready(bind(this, this.handleTechReady_), true);

            textTrackConverter.jsonToTextTracks(this.textTracksJson_ || [], this.tech_);

            // Listen to all HTML5-defined events and trigger them on the player
            TECH_EVENTS_RETRIGGER.forEach(function (event) {
                _this2.on(_this2.tech_, event, _this2['handleTech' + toTitleCase(event) + '_']);
            });
            this.on(this.tech_, 'loadstart', this.handleTechLoadStart_);
            this.on(this.tech_, 'waiting', this.handleTechWaiting_);
            this.on(this.tech_, 'canplay', this.handleTechCanPlay_);
            this.on(this.tech_, 'canplaythrough', this.handleTechCanPlayThrough_);
            this.on(this.tech_, 'playing', this.handleTechPlaying_);
            this.on(this.tech_, 'ended', this.handleTechEnded_);
            this.on(this.tech_, 'seeking', this.handleTechSeeking_);
            this.on(this.tech_, 'seeked', this.handleTechSeeked_);
            this.on(this.tech_, 'play', this.handleTechPlay_);
            this.on(this.tech_, 'firstplay', this.handleTechFirstPlay_);
            this.on(this.tech_, 'pause', this.handleTechPause_);
            this.on(this.tech_, 'durationchange', this.handleTechDurationChange_);
            this.on(this.tech_, 'fullscreenchange', this.handleTechFullscreenChange_);
            this.on(this.tech_, 'error', this.handleTechError_);
            this.on(this.tech_, 'loadedmetadata', this.updateStyleEl_);
            this.on(this.tech_, 'posterchange', this.handleTechPosterChange_);
            this.on(this.tech_, 'textdata', this.handleTechTextData_);

            this.usingNativeControls(this.techGet_('controls'));

            if (this.controls() && !this.usingNativeControls()) {
                this.addTechControlsListeners_();
            }

            // Add the tech element in the DOM if it was not already there
            // Make sure to not insert the original video element if using Html5
            if (this.tech_.el().parentNode !== this.el() && (titleTechName !== 'Html5' || !this.tag)) {
                prependTo(this.tech_.el(), this.el());
            }

            // Get rid of the original video tag reference after the first tech is loaded
            if (this.tag) {
                this.tag.player = null;
                this.tag = null;
            }
        };

        /**
         * Unload and dispose of the current playback {@link Tech}.
         *
         * @private
         */


        Player.prototype.unloadTech_ = function unloadTech_() {
            var _this3 = this;

            // Save the current text tracks so that we can reuse the same text tracks with the next tech
            ALL.names.forEach(function (name$$1) {
                var props = ALL[name$$1];

                _this3[props.privateName] = _this3[props.getterName]();
            });
            this.textTracksJson_ = textTrackConverter.textTracksToJson(this.tech_);

            this.isReady_ = false;

            this.tech_.dispose();

            this.tech_ = false;
        };

        /**
         * Return a reference to the current {@link Tech}.
         * It will print a warning by default about the danger of using the tech directly
         * but any argument that is passed in will silence the warning.
         *
         * @param {*} [safety]
         *        Anything passed in to silence the warning
         *
         * @return {Tech}
         *         The Tech
         */


        Player.prototype.tech = function tech(safety) {
            if (safety === undefined) {
                log$1.warn(tsml(_templateObject$1));
            }

            return this.tech_;
        };

        /**
         * Set up click and touch listeners for the playback element
         *
         * - On desktops: a click on the video itself will toggle playback
         * - On mobile devices: a click on the video toggles controls
         *   which is done by toggling the user state between active and
         *   inactive
         * - A tap can signal that a user has become active or has become inactive
         *   e.g. a quick tap on an iPhone movie should reveal the controls. Another
         *   quick tap should hide them again (signaling the user is in an inactive
         *   viewing state)
         * - In addition to this, we still want the user to be considered inactive after
         *   a few seconds of inactivity.
         *
         * > Note: the only part of iOS interaction we can't mimic with this setup
         * is a touch and hold on the video element counting as activity in order to
         * keep the controls showing, but that shouldn't be an issue. A touch and hold
         * on any controls will still keep the user active
         *
         * @private
         */


        Player.prototype.addTechControlsListeners_ = function addTechControlsListeners_() {
            // Make sure to remove all the previous listeners in case we are called multiple times.
            this.removeTechControlsListeners_();

            // Some browsers (Chrome & IE) don't trigger a click on a flash swf, but do
            // trigger mousedown/up.
            // http://stackoverflow.com/questions/1444562/javascript-onclick-event-over-flash-object
            // Any touch events are set to block the mousedown event from happening
            this.on(this.tech_, 'mousedown', this.handleTechClick_);

            // If the controls were hidden we don't want that to change without a tap event
            // so we'll check if the controls were already showing before reporting user
            // activity
            this.on(this.tech_, 'touchstart', this.handleTechTouchStart_);
            this.on(this.tech_, 'touchmove', this.handleTechTouchMove_);
            this.on(this.tech_, 'touchend', this.handleTechTouchEnd_);

            // The tap listener needs to come after the touchend listener because the tap
            // listener cancels out any reportedUserActivity when setting userActive(false)
            this.on(this.tech_, 'tap', this.handleTechTap_);
        };

        /**
         * Remove the listeners used for click and tap controls. This is needed for
         * toggling to controls disabled, where a tap/touch should do nothing.
         *
         * @private
         */


        Player.prototype.removeTechControlsListeners_ = function removeTechControlsListeners_() {
            // We don't want to just use `this.off()` because there might be other needed
            // listeners added by techs that extend this.
            this.off(this.tech_, 'tap', this.handleTechTap_);
            this.off(this.tech_, 'touchstart', this.handleTechTouchStart_);
            this.off(this.tech_, 'touchmove', this.handleTechTouchMove_);
            this.off(this.tech_, 'touchend', this.handleTechTouchEnd_);
            this.off(this.tech_, 'mousedown', this.handleTechClick_);
        };

        /**
         * Player waits for the tech to be ready
         *
         * @private
         */


        Player.prototype.handleTechReady_ = function handleTechReady_() {
            this.triggerReady();

            // Keep the same volume as before
            if (this.cache_.volume) {
                this.techCall_('setVolume', this.cache_.volume);
            }

            // Look if the tech found a higher resolution poster while loading
            this.handleTechPosterChange_();

            // Update the duration if available
            this.handleTechDurationChange_();

            // Chrome and Safari both have issues with autoplay.
            // In Safari (5.1.1), when we move the video element into the container div, autoplay doesn't work.
            // In Chrome (15), if you have autoplay + a poster + no controls, the video gets hidden (but audio plays)
            // This fixes both issues. Need to wait for API, so it updates displays correctly
            if ((this.src() || this.currentSrc()) && this.tag && this.options_.autoplay && this.paused()) {
                try {
                    // Chrome Fix. Fixed in Chrome v16.
                    delete this.tag.poster;
                } catch (e) {
                    log$1('deleting tag.poster throws in some browsers', e);
                }
            }
        };

        /**
         * Retrigger the `loadstart` event that was triggered by the {@link Tech}. This
         * function will also trigger {@link Player#firstplay} if it is the first loadstart
         * for a video.
         *
         * @fires Player#loadstart
         * @fires Player#firstplay
         * @listens Tech#loadstart
         * @private
         */


        Player.prototype.handleTechLoadStart_ = function handleTechLoadStart_() {
            // TODO: Update to use `emptied` event instead. See #1277.

            this.removeClass('vjs-ended');
            this.removeClass('vjs-seeking');

            // reset the error state
            this.error(null);

            // If it's already playing we want to trigger a firstplay event now.
            // The firstplay event relies on both the play and loadstart events
            // which can happen in any order for a new source
            if (!this.paused()) {
                /**
                 * Fired when the user agent begins looking for media data
                 *
                 * @event Player#loadstart
                 * @type {EventTarget~Event}
                 */
                this.trigger('loadstart');
                this.trigger('firstplay');
            } else {
                // reset the hasStarted state
                this.hasStarted(false);
                this.trigger('loadstart');
            }
        };

        /**
         * Add/remove the vjs-has-started class
         *
         * @fires Player#firstplay
         *
         * @param {boolean} hasStarted
         *        - true: adds the class
         *        - false: remove the class
         *
         * @return {boolean}
         *         the boolean value of hasStarted
         */


        Player.prototype.hasStarted = function hasStarted(_hasStarted) {
            if (_hasStarted !== undefined) {
                // only update if this is a new value
                if (this.hasStarted_ !== _hasStarted) {
                    this.hasStarted_ = _hasStarted;
                    if (_hasStarted) {
                        this.addClass('vjs-has-started');
                        // trigger the firstplay event if this newly has played
                        this.trigger('firstplay');
                    } else {
                        this.removeClass('vjs-has-started');
                    }
                }
                return;
            }
            return !!this.hasStarted_;
        };

        /**
         * Fired whenever the media begins or resumes playback
         *
         * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-play}
         * @fires Player#play
         * @listens Tech#play
         * @private
         */


        Player.prototype.handleTechPlay_ = function handleTechPlay_() {
            this.removeClass('vjs-ended');
            this.removeClass('vjs-paused');
            this.addClass('vjs-playing');

            // hide the poster when the user hits play
            this.hasStarted(true);
            /**
             * Triggered whenever an {@link Tech#play} event happens. Indicates that
             * playback has started or resumed.
             *
             * @event Player#play
             * @type {EventTarget~Event}
             */
            this.trigger('play');
        };

        /**
         * Retrigger the `waiting` event that was triggered by the {@link Tech}.
         *
         * @fires Player#waiting
         * @listens Tech#waiting
         * @private
         */


        Player.prototype.handleTechWaiting_ = function handleTechWaiting_() {
            var _this4 = this;

            this.addClass('vjs-waiting');
            /**
             * A readyState change on the DOM element has caused playback to stop.
             *
             * @event Player#waiting
             * @type {EventTarget~Event}
             */
            this.trigger('waiting');
            this.one('timeupdate', function () {
                return _this4.removeClass('vjs-waiting');
            });
        };

        /**
         * Retrigger the `canplay` event that was triggered by the {@link Tech}.
         * > Note: This is not consistent between browsers. See #1351
         *
         * @fires Player#canplay
         * @listens Tech#canplay
         * @private
         */


        Player.prototype.handleTechCanPlay_ = function handleTechCanPlay_() {
            this.removeClass('vjs-waiting');
            /**
             * The media has a readyState of HAVE_FUTURE_DATA or greater.
             *
             * @event Player#canplay
             * @type {EventTarget~Event}
             */
            this.trigger('canplay');
        };

        /**
         * Retrigger the `canplaythrough` event that was triggered by the {@link Tech}.
         *
         * @fires Player#canplaythrough
         * @listens Tech#canplaythrough
         * @private
         */


        Player.prototype.handleTechCanPlayThrough_ = function handleTechCanPlayThrough_() {
            this.removeClass('vjs-waiting');
            /**
             * The media has a readyState of HAVE_ENOUGH_DATA or greater. This means that the
             * entire media file can be played without buffering.
             *
             * @event Player#canplaythrough
             * @type {EventTarget~Event}
             */
            this.trigger('canplaythrough');
        };

        /**
         * Retrigger the `playing` event that was triggered by the {@link Tech}.
         *
         * @fires Player#playing
         * @listens Tech#playing
         * @private
         */


        Player.prototype.handleTechPlaying_ = function handleTechPlaying_() {
            this.removeClass('vjs-waiting');
            /**
             * The media is no longer blocked from playback, and has started playing.
             *
             * @event Player#playing
             * @type {EventTarget~Event}
             */
            this.trigger('playing');
        };

        /**
         * Retrigger the `seeking` event that was triggered by the {@link Tech}.
         *
         * @fires Player#seeking
         * @listens Tech#seeking
         * @private
         */


        Player.prototype.handleTechSeeking_ = function handleTechSeeking_() {
            this.addClass('vjs-seeking');
            /**
             * Fired whenever the player is jumping to a new time
             *
             * @event Player#seeking
             * @type {EventTarget~Event}
             */
            this.trigger('seeking');
        };

        /**
         * Retrigger the `seeked` event that was triggered by the {@link Tech}.
         *
         * @fires Player#seeked
         * @listens Tech#seeked
         * @private
         */


        Player.prototype.handleTechSeeked_ = function handleTechSeeked_() {
            this.removeClass('vjs-seeking');
            /**
             * Fired when the player has finished jumping to a new time
             *
             * @event Player#seeked
             * @type {EventTarget~Event}
             */
            this.trigger('seeked');
        };

        /**
         * Retrigger the `firstplay` event that was triggered by the {@link Tech}.
         *
         * @fires Player#firstplay
         * @listens Tech#firstplay
         * @deprecated As of 6.0 firstplay event is deprecated.
         * @deprecated As of 6.0 passing the `starttime` option to the player and the firstplay event are deprecated.
         * @private
         */


        Player.prototype.handleTechFirstPlay_ = function handleTechFirstPlay_() {
            // If the first starttime attribute is specified
            // then we will start at the given offset in seconds
            if (this.options_.starttime) {
                log$1.warn('Passing the `starttime` option to the player will be deprecated in 6.0');
                this.currentTime(this.options_.starttime);
            }

            this.addClass('vjs-has-started');
            /**
             * Fired the first time a video is played. Not part of the HLS spec, and this is
             * probably not the best implementation yet, so use sparingly. If you don't have a
             * reason to prevent playback, use `myPlayer.one('play');` instead.
             *
             * @event Player#firstplay
             * @deprecated As of 6.0 firstplay event is deprecated.
             * @type {EventTarget~Event}
             */
            this.trigger('firstplay');
        };

        /**
         * Retrigger the `pause` event that was triggered by the {@link Tech}.
         *
         * @fires Player#pause
         * @listens Tech#pause
         * @private
         */


        Player.prototype.handleTechPause_ = function handleTechPause_() {
            this.removeClass('vjs-playing');
            this.addClass('vjs-paused');
            /**
             * Fired whenever the media has been paused
             *
             * @event Player#pause
             * @type {EventTarget~Event}
             */
            this.trigger('pause');
        };

        /**
         * Retrigger the `ended` event that was triggered by the {@link Tech}.
         *
         * @fires Player#ended
         * @listens Tech#ended
         * @private
         */


        Player.prototype.handleTechEnded_ = function handleTechEnded_() {
            this.addClass('vjs-ended');
            if (this.options_.loop) {
                this.currentTime(0);
                this.play();
            } else if (!this.paused()) {
                this.pause();
            }

            /**
             * Fired when the end of the media resource is reached (currentTime == duration)
             *
             * @event Player#ended
             * @type {EventTarget~Event}
             */
            this.trigger('ended');
        };

        /**
         * Fired when the duration of the media resource is first known or changed
         *
         * @listens Tech#durationchange
         * @private
         */


        Player.prototype.handleTechDurationChange_ = function handleTechDurationChange_() {
            this.duration(this.techGet_('duration'));
        };

        /**
         * Handle a click on the media element to play/pause
         *
         * @param {EventTarget~Event} event
         *        the event that caused this function to trigger
         *
         * @listens Tech#mousedown
         * @private
         */


        Player.prototype.handleTechClick_ = function handleTechClick_(event) {
            // We're using mousedown to detect clicks thanks to Flash, but mousedown
            // will also be triggered with right-clicks, so we need to prevent that
            if (event.button !== 0) {
                return;
            }

            // When controls are disabled a click should not toggle playback because
            // the click is considered a control
            if (this.controls()) {
                if (this.paused()) {
                    this.play();
                } else {
                    this.pause();
                }
            }
        };

        /**
         * Handle a tap on the media element. It will toggle the user
         * activity state, which hides and shows the controls.
         *
         * @listens Tech#tap
         * @private
         */


        Player.prototype.handleTechTap_ = function handleTechTap_() {
            this.userActive(!this.userActive());
        };

        /**
         * Handle touch to start
         *
         * @listens Tech#touchstart
         * @private
         */


        Player.prototype.handleTechTouchStart_ = function handleTechTouchStart_() {
            this.userWasActive = this.userActive();
        };

        /**
         * Handle touch to move
         *
         * @listens Tech#touchmove
         * @private
         */


        Player.prototype.handleTechTouchMove_ = function handleTechTouchMove_() {
            if (this.userWasActive) {
                this.reportUserActivity();
            }
        };

        /**
         * Handle touch to end
         *
         * @param {EventTarget~Event} event
         *        the touchend event that triggered
         *        this function
         *
         * @listens Tech#touchend
         * @private
         */


        Player.prototype.handleTechTouchEnd_ = function handleTechTouchEnd_(event) {
            // Stop the mouse events from also happening
            event.preventDefault();
        };

        /**
         * Fired when the player switches in or out of fullscreen mode
         *
         * @private
         * @listens Player#fullscreenchange
         */


        Player.prototype.handleFullscreenChange_ = function handleFullscreenChange_() {
            if (this.isFullscreen()) {
                this.addClass('vjs-fullscreen');
            } else {
                this.removeClass('vjs-fullscreen');
            }
        };

        /**
         * native click events on the SWF aren't triggered on IE11, Win8.1RT
         * use stageclick events triggered from inside the SWF instead
         *
         * @private
         * @listens stageclick
         */


        Player.prototype.handleStageClick_ = function handleStageClick_() {
            this.reportUserActivity();
        };

        /**
         * Handle Tech Fullscreen Change
         *
         * @param {EventTarget~Event} event
         *        the fullscreenchange event that triggered this function
         *
         * @param {Object} data
         *        the data that was sent with the event
         *
         * @private
         * @listens Tech#fullscreenchange
         * @fires Player#fullscreenchange
         */


        Player.prototype.handleTechFullscreenChange_ = function handleTechFullscreenChange_(event, data) {
            if (data) {
                this.isFullscreen(data.isFullscreen);
            }
            /**
             * Fired when going in and out of fullscreen.
             *
             * @event Player#fullscreenchange
             * @type {EventTarget~Event}
             */
            this.trigger('fullscreenchange');
        };

        /**
         * Fires when an error occurred during the loading of an audio/video.
         *
         * @private
         * @listens Tech#error
         */


        Player.prototype.handleTechError_ = function handleTechError_() {
            var error = this.tech_.error();

            this.error(error);
        };

        /**
         * Retrigger the `textdata` event that was triggered by the {@link Tech}.
         *
         * @fires Player#textdata
         * @listens Tech#textdata
         * @private
         */


        Player.prototype.handleTechTextData_ = function handleTechTextData_() {
            var data = null;

            if (arguments.length > 1) {
                data = arguments[1];
            }

            /**
             * Fires when we get a textdata event from tech
             *
             * @event Player#textdata
             * @type {EventTarget~Event}
             */
            this.trigger('textdata', data);
        };

        /**
         * Get object for cached values.
         *
         * @return {Object}
         *         get the current object cache
         */


        Player.prototype.getCache = function getCache() {
            return this.cache_;
        };

        /**
         * Pass values to the playback tech
         *
         * @param {string} [method]
         *        the method to call
         *
         * @param {Object} arg
         *        the argument to pass
         *
         * @private
         */


        Player.prototype.techCall_ = function techCall_(method, arg) {
            // If it's not ready yet, call method when it is

            this.ready(function () {
                if (method in allowedSetters) {
                    return set$1(this.middleware_, this.tech_, method, arg);
                }

                try {
                    if (this.tech_) {
                        this.tech_[method](arg);
                    }
                } catch (e) {
                    log$1(e);
                    throw e;
                }
            }, true);
        };

        /**
         * Get calls can't wait for the tech, and sometimes don't need to.
         *
         * @param {string} method
         *        Tech method
         *
         * @return {Function|undefined}
         *         the method or undefined
         *
         * @private
         */


        Player.prototype.techGet_ = function techGet_(method) {
            if (this.tech_ && this.tech_.isReady_) {

                if (method in allowedGetters) {
                    return get$1(this.middleware_, this.tech_, method);
                }

                // Flash likes to die and reload when you hide or reposition it.
                // In these cases the object methods go away and we get errors.
                // When that happens we'll catch the errors and inform tech that it's not ready any more.
                try {
                    return this.tech_[method]();
                } catch (e) {
                    // When building additional tech libs, an expected method may not be defined yet
                    if (this.tech_[method] === undefined) {
                        log$1('Video.js: ' + method + ' method not defined for ' + this.techName_ + ' playback technology.', e);

                        // When a method isn't available on the object it throws a TypeError
                    } else if (e.name === 'TypeError') {
                        log$1('Video.js: ' + method + ' unavailable on ' + this.techName_ + ' playback technology element.', e);
                        this.tech_.isReady_ = false;
                    } else {
                        log$1(e);
                    }
                    throw e;
                }
            }

            return;
        };

        /**
         * start media playback
         *
         * @return {Promise|undefined}
         *         Returns a `Promise` if the browser returns one, for most browsers this will
         *         return undefined.
         */


        Player.prototype.play = function play() {
            if (this.changingSrc_) {
                this.ready(function () {
                    var retval = this.techGet_('play');

                    // silence errors (unhandled promise from play)
                    if (retval !== undefined && typeof retval.then === 'function') {
                        retval.then(null, function (e) {});
                    }
                });

                // Only calls the tech's play if we already have a src loaded
            } else if (this.isReady_ && (this.src() || this.currentSrc())) {
                return this.techGet_('play');
            } else {
                this.ready(function () {
                    this.tech_.one('loadstart', function () {
                        var retval = this.play();

                        // silence errors (unhandled promise from play)
                        if (retval !== undefined && typeof retval.then === 'function') {
                            retval.then(null, function (e) {});
                        }
                    });
                });
            }
        };

        /**
         * Pause the video playback
         *
         * @return {Player}
         *         A reference to the player object this function was called on
         */


        Player.prototype.pause = function pause() {
            this.techCall_('pause');
        };

        /**
         * Check if the player is paused or has yet to play
         *
         * @return {boolean}
         *         - false: if the media is currently playing
         *         - true: if media is not currently playing
         */


        Player.prototype.paused = function paused() {
            // The initial state of paused should be true (in Safari it's actually false)
            return this.techGet_('paused') === false ? false : true;
        };

        /**
         * Get a TimeRange object representing the current ranges of time that the user
         * has played.
         *
         * @return {TimeRange}
         *         A time range object that represents all the increments of time that have
         *         been played.
         */


        Player.prototype.played = function played() {
            return this.techGet_('played') || createTimeRanges(0, 0);
        };

        /**
         * Returns whether or not the user is "scrubbing". Scrubbing is
         * when the user has clicked the progress bar handle and is
         * dragging it along the progress bar.
         *
         * @param {boolean} [isScrubbing]
         *        wether the user is or is not scrubbing
         *
         * @return {boolean}
         *         The value of scrubbing when getting
         */


        Player.prototype.scrubbing = function scrubbing(isScrubbing) {
            if (typeof isScrubbing === 'undefined') {
                return this.scrubbing_;
            }
            this.scrubbing_ = !!isScrubbing;

            if (isScrubbing) {
                this.addClass('vjs-scrubbing');
            } else {
                this.removeClass('vjs-scrubbing');
            }
        };

        /**
         * Get or set the current time (in seconds)
         *
         * @param {number|string} [seconds]
         *        The time to seek to in seconds
         *
         * @return {number}
         *         - the current time in seconds when getting
         */


        Player.prototype.currentTime = function currentTime(seconds) {
            if (typeof seconds !== 'undefined') {
                this.techCall_('setCurrentTime', seconds);
                return;
            }

            // cache last currentTime and return. default to 0 seconds
            //
            // Caching the currentTime is meant to prevent a massive amount of reads on the tech's
            // currentTime when scrubbing, but may not provide much performance benefit afterall.
            // Should be tested. Also something has to read the actual current time or the cache will
            // never get updated.
            this.cache_.currentTime = this.techGet_('currentTime') || 0;
            return this.cache_.currentTime;
        };

        /**
         * Normally gets the length in time of the video in seconds;
         * in all but the rarest use cases an argument will NOT be passed to the method
         *
         * > **NOTE**: The video must have started loading before the duration can be
         * known, and in the case of Flash, may not be known until the video starts
         * playing.
         *
         * @fires Player#durationchange
         *
         * @param {number} [seconds]
         *        The duration of the video to set in seconds
         *
         * @return {number}
         *         - The duration of the video in seconds when getting
         */


        Player.prototype.duration = function duration(seconds) {
            if (seconds === undefined) {
                // return NaN if the duration is not known
                return this.cache_.duration !== undefined ? this.cache_.duration : NaN;
            }

            seconds = parseFloat(seconds);

            // Standardize on Inifity for signaling video is live
            if (seconds < 0) {
                seconds = Infinity;
            }

            if (seconds !== this.cache_.duration) {
                // Cache the last set value for optimized scrubbing (esp. Flash)
                this.cache_.duration = seconds;

                if (seconds === Infinity) {
                    this.addClass('vjs-live');
                } else {
                    this.removeClass('vjs-live');
                }
                /**
                 * @event Player#durationchange
                 * @type {EventTarget~Event}
                 */
                this.trigger('durationchange');
            }
        };

        /**
         * Calculates how much time is left in the video. Not part
         * of the native video API.
         *
         * @return {number}
         *         The time remaining in seconds
         */


        Player.prototype.remainingTime = function remainingTime() {
            return this.duration() - this.currentTime();
        };

        //
        // Kind of like an array of portions of the video that have been downloaded.

        /**
         * Get a TimeRange object with an array of the times of the video
         * that have been downloaded. If you just want the percent of the
         * video that's been downloaded, use bufferedPercent.
         *
         * @see [Buffered Spec]{@link http://dev.w3.org/html5/spec/video.html#dom-media-buffered}
         *
         * @return {TimeRange}
         *         A mock TimeRange object (following HTML spec)
         */


        Player.prototype.buffered = function buffered() {
            var buffered = this.techGet_('buffered');

            if (!buffered || !buffered.length) {
                buffered = createTimeRanges(0, 0);
            }

            return buffered;
        };

        /**
         * Get the percent (as a decimal) of the video that's been downloaded.
         * This method is not a part of the native HTML video API.
         *
         * @return {number}
         *         A decimal between 0 and 1 representing the percent
         *         that is bufferred 0 being 0% and 1 being 100%
         */


        Player.prototype.bufferedPercent = function bufferedPercent$$1() {
            return bufferedPercent(this.buffered(), this.duration());
        };

        /**
         * Get the ending time of the last buffered time range
         * This is used in the progress bar to encapsulate all time ranges.
         *
         * @return {number}
         *         The end of the last buffered time range
         */


        Player.prototype.bufferedEnd = function bufferedEnd() {
            var buffered = this.buffered();
            var duration = this.duration();
            var end = buffered.end(buffered.length - 1);

            if (end > duration) {
                end = duration;
            }

            return end;
        };

        /**
         * Get or set the current volume of the media
         *
         * @param  {number} [percentAsDecimal]
         *         The new volume as a decimal percent:
         *         - 0 is muted/0%/off
         *         - 1.0 is 100%/full
         *         - 0.5 is half volume or 50%
         *
         * @return {number}
         *         The current volume as a percent when getting
         */


        Player.prototype.volume = function volume(percentAsDecimal) {
            var vol = void 0;

            if (percentAsDecimal !== undefined) {
                // Force value to between 0 and 1
                vol = Math.max(0, Math.min(1, parseFloat(percentAsDecimal)));
                this.cache_.volume = vol;
                this.techCall_('setVolume', vol);

                if (vol > 0) {
                    this.lastVolume_(vol);
                }

                return;
            }

            // Default to 1 when returning current volume.
            vol = parseFloat(this.techGet_('volume'));
            return isNaN(vol) ? 1 : vol;
        };

        /**
         * Get the current muted state, or turn mute on or off
         *
         * @param {boolean} [muted]
         *        - true to mute
         *        - false to unmute
         *
         * @return {boolean}
         *         - true if mute is on and getting
         *         - false if mute is off and getting
         */


        Player.prototype.muted = function muted(_muted) {
            if (_muted !== undefined) {
                this.techCall_('setMuted', _muted);
                return;
            }
            return this.techGet_('muted') || false;
        };

        /**
         * Get the current defaultMuted state, or turn defaultMuted on or off. defaultMuted
         * indicates the state of muted on intial playback.
         *
         * ```js
         *   var myPlayer = videojs('some-player-id');
         *
         *   myPlayer.src("http://www.example.com/path/to/video.mp4");
         *
         *   // get, should be false
         *   console.log(myPlayer.defaultMuted());
         *   // set to true
         *   myPlayer.defaultMuted(true);
         *   // get should be true
         *   console.log(myPlayer.defaultMuted());
         * ```
         *
         * @param {boolean} [defaultMuted]
         *        - true to mute
         *        - false to unmute
         *
         * @return {boolean|Player}
         *         - true if defaultMuted is on and getting
         *         - false if defaultMuted is off and getting
         *         - A reference to the current player when setting
         */


        Player.prototype.defaultMuted = function defaultMuted(_defaultMuted) {
            if (_defaultMuted !== undefined) {
                return this.techCall_('setDefaultMuted', _defaultMuted);
            }
            return this.techGet_('defaultMuted') || false;
        };

        /**
         * Get the last volume, or set it
         *
         * @param  {number} [percentAsDecimal]
         *         The new last volume as a decimal percent:
         *         - 0 is muted/0%/off
         *         - 1.0 is 100%/full
         *         - 0.5 is half volume or 50%
         *
         * @return {number}
         *         the current value of lastVolume as a percent when getting
         *
         * @private
         */


        Player.prototype.lastVolume_ = function lastVolume_(percentAsDecimal) {
            if (percentAsDecimal !== undefined && percentAsDecimal !== 0) {
                this.cache_.lastVolume = percentAsDecimal;
                return;
            }
            return this.cache_.lastVolume;
        };

        /**
         * Check if current tech can support native fullscreen
         * (e.g. with built in controls like iOS, so not our flash swf)
         *
         * @return {boolean}
         *         if native fullscreen is supported
         */


        Player.prototype.supportsFullScreen = function supportsFullScreen() {
            return this.techGet_('supportsFullScreen') || false;
        };

        /**
         * Check if the player is in fullscreen mode or tell the player that it
         * is or is not in fullscreen mode.
         *
         * > NOTE: As of the latest HTML5 spec, isFullscreen is no longer an official
         * property and instead document.fullscreenElement is used. But isFullscreen is
         * still a valuable property for internal player workings.
         *
         * @param  {boolean} [isFS]
         *         Set the players current fullscreen state
         *
         * @return {boolean}
         *         - true if fullscreen is on and getting
         *         - false if fullscreen is off and getting
         */


        Player.prototype.isFullscreen = function isFullscreen(isFS) {
            if (isFS !== undefined) {
                this.isFullscreen_ = !!isFS;
                return;
            }
            return !!this.isFullscreen_;
        };

        /**
         * Increase the size of the video to full screen
         * In some browsers, full screen is not supported natively, so it enters
         * "full window mode", where the video fills the browser window.
         * In browsers and devices that support native full screen, sometimes the
         * browser's default controls will be shown, and not the Video.js custom skin.
         * This includes most mobile devices (iOS, Android) and older versions of
         * Safari.
         *
         * @fires Player#fullscreenchange
         */


        Player.prototype.requestFullscreen = function requestFullscreen() {
            var fsApi = FullscreenApi;

            this.isFullscreen(true);

            if (fsApi.requestFullscreen) {
                // the browser supports going fullscreen at the element level so we can
                // take the controls fullscreen as well as the video

                // Trigger fullscreenchange event after change
                // We have to specifically add this each time, and remove
                // when canceling fullscreen. Otherwise if there's multiple
                // players on a page, they would all be reacting to the same fullscreen
                // events
                on(document_1, fsApi.fullscreenchange, bind(this, function documentFullscreenChange(e) {
                    this.isFullscreen(document_1[fsApi.fullscreenElement]);

                    // If cancelling fullscreen, remove event listener.
                    if (this.isFullscreen() === false) {
                        off(document_1, fsApi.fullscreenchange, documentFullscreenChange);
                    }
                    /**
                     * @event Player#fullscreenchange
                     * @type {EventTarget~Event}
                     */
                    this.trigger('fullscreenchange');
                }));

                this.el_[fsApi.requestFullscreen]();
            } else if (this.tech_.supportsFullScreen()) {
                // we can't take the video.js controls fullscreen but we can go fullscreen
                // with native controls
                this.techCall_('enterFullScreen');
            } else {
                // fullscreen isn't supported so we'll just stretch the video element to
                // fill the viewport
                this.enterFullWindow();
                /**
                 * @event Player#fullscreenchange
                 * @type {EventTarget~Event}
                 */
                this.trigger('fullscreenchange');
            }
        };

        /**
         * Return the video to its normal size after having been in full screen mode
         *
         * @fires Player#fullscreenchange
         */


        Player.prototype.exitFullscreen = function exitFullscreen() {
            var fsApi = FullscreenApi;

            this.isFullscreen(false);

            // Check for browser element fullscreen support
            if (fsApi.requestFullscreen) {
                document_1[fsApi.exitFullscreen]();
            } else if (this.tech_.supportsFullScreen()) {
                this.techCall_('exitFullScreen');
            } else {
                this.exitFullWindow();
                /**
                 * @event Player#fullscreenchange
                 * @type {EventTarget~Event}
                 */
                this.trigger('fullscreenchange');
            }
        };

        /**
         * When fullscreen isn't supported we can stretch the
         * video container to as wide as the browser will let us.
         *
         * @fires Player#enterFullWindow
         */


        Player.prototype.enterFullWindow = function enterFullWindow() {
            this.isFullWindow = true;

            // Storing original doc overflow value to return to when fullscreen is off
            this.docOrigOverflow = document_1.documentElement.style.overflow;

            // Add listener for esc key to exit fullscreen
            on(document_1, 'keydown', bind(this, this.fullWindowOnEscKey));

            // Hide any scroll bars
            document_1.documentElement.style.overflow = 'hidden';

            // Apply fullscreen styles
            addClass(document_1.body, 'vjs-full-window');

            /**
             * @event Player#enterFullWindow
             * @type {EventTarget~Event}
             */
            this.trigger('enterFullWindow');
        };

        /**
         * Check for call to either exit full window or
         * full screen on ESC key
         *
         * @param {string} event
         *        Event to check for key press
         */


        Player.prototype.fullWindowOnEscKey = function fullWindowOnEscKey(event) {
            if (event.keyCode === 27) {
                if (this.isFullscreen() === true) {
                    this.exitFullscreen();
                } else {
                    this.exitFullWindow();
                }
            }
        };

        /**
         * Exit full window
         *
         * @fires Player#exitFullWindow
         */


        Player.prototype.exitFullWindow = function exitFullWindow() {
            this.isFullWindow = false;
            off(document_1, 'keydown', this.fullWindowOnEscKey);

            // Unhide scroll bars.
            document_1.documentElement.style.overflow = this.docOrigOverflow;

            // Remove fullscreen styles
            removeClass(document_1.body, 'vjs-full-window');

            // Resize the box, controller, and poster to original sizes
            // this.positionAll();
            /**
             * @event Player#exitFullWindow
             * @type {EventTarget~Event}
             */
            this.trigger('exitFullWindow');
        };

        /**
         * Check whether the player can play a given mimetype
         *
         * @see https://www.w3.org/TR/2011/WD-html5-20110113/video.html#dom-navigator-canplaytype
         *
         * @param {string} type
         *        The mimetype to check
         *
         * @return {string}
         *         'probably', 'maybe', or '' (empty string)
         */


        Player.prototype.canPlayType = function canPlayType(type) {
            var can = void 0;

            // Loop through each playback technology in the options order
            for (var i = 0, j = this.options_.techOrder; i < j.length; i++) {
                var techName = j[i];
                var tech = Tech.getTech(techName);

                // Support old behavior of techs being registered as components.
                // Remove once that deprecated behavior is removed.
                if (!tech) {
                    tech = Component.getComponent(techName);
                }

                // Check if the current tech is defined before continuing
                if (!tech) {
                    log$1.error('The "' + techName + '" tech is undefined. Skipped browser support check for that tech.');
                    continue;
                }

                // Check if the browser supports this technology
                if (tech.isSupported()) {
                    can = tech.canPlayType(type);

                    if (can) {
                        return can;
                    }
                }
            }

            return '';
        };

        /**
         * Select source based on tech-order or source-order
         * Uses source-order selection if `options.sourceOrder` is truthy. Otherwise,
         * defaults to tech-order selection
         *
         * @param {Array} sources
         *        The sources for a media asset
         *
         * @return {Object|boolean}
         *         Object of source and tech order or false
         */


        Player.prototype.selectSource = function selectSource(sources) {
            var _this5 = this;

            // Get only the techs specified in `techOrder` that exist and are supported by the
            // current platform
            var techs = this.options_.techOrder.map(function (techName) {
                return [techName, Tech.getTech(techName)];
            }).filter(function (_ref) {
                var techName = _ref[0],
                    tech = _ref[1];

                // Check if the current tech is defined before continuing
                if (tech) {
                    // Check if the browser supports this technology
                    return tech.isSupported();
                }

                log$1.error('The "' + techName + '" tech is undefined. Skipped browser support check for that tech.');
                return false;
            });

            // Iterate over each `innerArray` element once per `outerArray` element and execute
            // `tester` with both. If `tester` returns a non-falsy value, exit early and return
            // that value.
            var findFirstPassingTechSourcePair = function findFirstPassingTechSourcePair(outerArray, innerArray, tester) {
                var found = void 0;

                outerArray.some(function (outerChoice) {
                    return innerArray.some(function (innerChoice) {
                        found = tester(outerChoice, innerChoice);

                        if (found) {
                            return true;
                        }
                    });
                });

                return found;
            };

            var foundSourceAndTech = void 0;
            var flip = function flip(fn) {
                return function (a, b) {
                    return fn(b, a);
                };
            };
            var finder = function finder(_ref2, source) {
                var techName = _ref2[0],
                    tech = _ref2[1];

                if (tech.canPlaySource(source, _this5.options_[techName.toLowerCase()])) {
                    return { source: source, tech: techName };
                }
            };

            // Depending on the truthiness of `options.sourceOrder`, we swap the order of techs and sources
            // to select from them based on their priority.
            if (this.options_.sourceOrder) {
                // Source-first ordering
                foundSourceAndTech = findFirstPassingTechSourcePair(sources, techs, flip(finder));
            } else {
                // Tech-first ordering
                foundSourceAndTech = findFirstPassingTechSourcePair(techs, sources, finder);
            }

            return foundSourceAndTech || false;
        };

        /**
         * Get or set the video source.
         *
         * @param {Tech~SourceObject|Tech~SourceObject[]|string} [source]
         *        A SourceObject, an array of SourceObjects, or a string referencing
         *        a URL to a media source. It is _highly recommended_ that an object
         *        or array of objects is used here, so that source selection
         *        algorithms can take the `type` into account.
         *
         *        If not provided, this method acts as a getter.
         *
         * @return {string|undefined}
         *         If the `source` argument is missing, returns the current source
         *         URL. Otherwise, returns nothing/undefined.
         */


        Player.prototype.src = function src(source) {
            var _this6 = this;

            // getter usage
            if (typeof source === 'undefined') {
                return this.cache_.src;
            }
            // filter out invalid sources and turn our source into
            // an array of source objects
            var sources = filterSource(source);

            // if a source was passed in then it is invalid because
            // it was filtered to a zero length Array. So we have to
            // show an error
            if (!sources.length) {
                this.setTimeout(function () {
                    this.error({ code: 4, message: this.localize(this.options_.notSupportedMessage) });
                }, 0);
                return;
            }

            // intial sources
            this.cache_.sources = sources;
            this.changingSrc_ = true;

            // intial source
            this.cache_.source = sources[0];

            // middlewareSource is the source after it has been changed by middleware
            setSource(this, sources[0], function (middlewareSource, mws) {
                _this6.middleware_ = mws;

                var err = _this6.src_(middlewareSource);

                if (err) {
                    if (sources.length > 1) {
                        return _this6.src(sources.slice(1));
                    }

                    // We need to wrap this in a timeout to give folks a chance to add error event handlers
                    _this6.setTimeout(function () {
                        this.error({ code: 4, message: this.localize(this.options_.notSupportedMessage) });
                    }, 0);

                    // we could not find an appropriate tech, but let's still notify the delegate that this is it
                    // this needs a better comment about why this is needed
                    _this6.triggerReady();

                    return;
                }

                _this6.changingSrc_ = false;
                // video element listed source
                _this6.cache_.src = middlewareSource.src;

                setTech(mws, _this6.tech_);
            });
        };

        /**
         * Set the source object on the tech, returns a boolean that indicates wether
         * there is a tech that can play the source or not
         *
         * @param {Tech~SourceObject} source
         *        The source object to set on the Tech
         *
         * @return {Boolean}
         *         - True if there is no Tech to playback this source
         *         - False otherwise
         *
         * @private
         */


        Player.prototype.src_ = function src_(source) {
            var sourceTech = this.selectSource([source]);

            if (!sourceTech) {
                return true;
            }

            if (!titleCaseEquals(sourceTech.tech, this.techName_)) {
                this.changingSrc_ = true;

                // load this technology with the chosen source
                this.loadTech_(sourceTech.tech, sourceTech.source);
                return false;
            }

            // wait until the tech is ready to set the source
            this.ready(function () {

                // The setSource tech method was added with source handlers
                // so older techs won't support it
                // We need to check the direct prototype for the case where subclasses
                // of the tech do not support source handlers
                if (this.tech_.constructor.prototype.hasOwnProperty('setSource')) {
                    this.techCall_('setSource', source);
                } else {
                    this.techCall_('src', source.src);
                }

                if (this.options_.preload === 'auto') {
                    this.load();
                }

                // Set the source synchronously if possible (#2326)
            }, true);

            return false;
        };

        /**
         * Begin loading the src data.
         */


        Player.prototype.load = function load() {
            this.techCall_('load');
        };

        /**
         * Reset the player. Loads the first tech in the techOrder,
         * and calls `reset` on the tech`.
         */


        Player.prototype.reset = function reset() {
            this.loadTech_(this.options_.techOrder[0], null);
            this.techCall_('reset');
        };

        /**
         * Returns all of the current source objects.
         *
         * @return {Tech~SourceObject[]}
         *         The current source objects
         */


        Player.prototype.currentSources = function currentSources() {
            var source = this.currentSource();
            var sources = [];

            // assume `{}` or `{ src }`
            if (Object.keys(source).length !== 0) {
                sources.push(source);
            }

            return this.cache_.sources || sources;
        };

        /**
         * Returns the current source object.
         *
         * @return {Tech~SourceObject}
         *         The current source object
         */


        Player.prototype.currentSource = function currentSource() {
            return this.cache_.source || {};
        };

        /**
         * Returns the fully qualified URL of the current source value e.g. http://mysite.com/video.mp4
         * Can be used in conjuction with `currentType` to assist in rebuilding the current source object.
         *
         * @return {string}
         *         The current source
         */


        Player.prototype.currentSrc = function currentSrc() {
            return this.currentSource() && this.currentSource().src || '';
        };

        /**
         * Get the current source type e.g. video/mp4
         * This can allow you rebuild the current source object so that you could load the same
         * source and tech later
         *
         * @return {string}
         *         The source MIME type
         */


        Player.prototype.currentType = function currentType() {
            return this.currentSource() && this.currentSource().type || '';
        };

        /**
         * Get or set the preload attribute
         *
         * @param {boolean} [value]
         *        - true means that we should preload
         *        - false maens that we should not preload
         *
         * @return {string}
         *         The preload attribute value when getting
         */


        Player.prototype.preload = function preload(value) {
            if (value !== undefined) {
                this.techCall_('setPreload', value);
                this.options_.preload = value;
                return;
            }
            return this.techGet_('preload');
        };

        /**
         * Get or set the autoplay attribute.
         *
         * @param {boolean} [value]
         *        - true means that we should autoplay
         *        - false means that we should not autoplay
         *
         * @return {string}
         *         The current value of autoplay when getting
         */


        Player.prototype.autoplay = function autoplay(value) {
            if (value !== undefined) {
                this.techCall_('setAutoplay', value);
                this.options_.autoplay = value;
                return;
            }
            return this.techGet_('autoplay', value);
        };

        /**
         * Set or unset the playsinline attribute.
         * Playsinline tells the browser that non-fullscreen playback is preferred.
         *
         * @param {boolean} [value]
         *        - true means that we should try to play inline by default
         *        - false means that we should use the browser's default playback mode,
         *          which in most cases is inline. iOS Safari is a notable exception
         *          and plays fullscreen by default.
         *
         * @return {string|Player}
         *         - the current value of playsinline
         *         - the player when setting
         *
         * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}
         */


        Player.prototype.playsinline = function playsinline(value) {
            if (value !== undefined) {
                this.techCall_('setPlaysinline', value);
                this.options_.playsinline = value;
                return this;
            }
            return this.techGet_('playsinline');
        };

        /**
         * Get or set the loop attribute on the video element.
         *
         * @param {boolean} [value]
         *        - true means that we should loop the video
         *        - false means that we should not loop the video
         *
         * @return {string}
         *         The current value of loop when getting
         */


        Player.prototype.loop = function loop(value) {
            if (value !== undefined) {
                this.techCall_('setLoop', value);
                this.options_.loop = value;
                return;
            }
            return this.techGet_('loop');
        };

        /**
         * Get or set the poster image source url
         *
         * @fires Player#posterchange
         *
         * @param {string} [src]
         *        Poster image source URL
         *
         * @return {string}
         *         The current value of poster when getting
         */


        Player.prototype.poster = function poster(src) {
            if (src === undefined) {
                return this.poster_;
            }

            // The correct way to remove a poster is to set as an empty string
            // other falsey values will throw errors
            if (!src) {
                src = '';
            }

            // update the internal poster variable
            this.poster_ = src;

            // update the tech's poster
            this.techCall_('setPoster', src);

            // alert components that the poster has been set
            /**
             * This event fires when the poster image is changed on the player.
             *
             * @event Player#posterchange
             * @type {EventTarget~Event}
             */
            this.trigger('posterchange');
        };

        /**
         * Some techs (e.g. YouTube) can provide a poster source in an
         * asynchronous way. We want the poster component to use this
         * poster source so that it covers up the tech's controls.
         * (YouTube's play button). However we only want to use this
         * source if the player user hasn't set a poster through
         * the normal APIs.
         *
         * @fires Player#posterchange
         * @listens Tech#posterchange
         * @private
         */


        Player.prototype.handleTechPosterChange_ = function handleTechPosterChange_() {
            if (!this.poster_ && this.tech_ && this.tech_.poster) {
                this.poster_ = this.tech_.poster() || '';

                // Let components know the poster has changed
                this.trigger('posterchange');
            }
        };

        /**
         * Get or set whether or not the controls are showing.
         *
         * @fires Player#controlsenabled
         *
         * @param {boolean} [bool]
         *        - true to turn controls on
         *        - false to turn controls off
         *
         * @return {boolean}
         *         The current value of controls when getting
         */


        Player.prototype.controls = function controls(bool) {
            if (bool !== undefined) {
                bool = !!bool;

                // Don't trigger a change event unless it actually changed
                if (this.controls_ !== bool) {
                    this.controls_ = bool;

                    if (this.usingNativeControls()) {
                        this.techCall_('setControls', bool);
                    }

                    if (bool) {
                        this.removeClass('vjs-controls-disabled');
                        this.addClass('vjs-controls-enabled');
                        /**
                         * @event Player#controlsenabled
                         * @type {EventTarget~Event}
                         */
                        this.trigger('controlsenabled');

                        if (!this.usingNativeControls()) {
                            this.addTechControlsListeners_();
                        }
                    } else {
                        this.removeClass('vjs-controls-enabled');
                        this.addClass('vjs-controls-disabled');
                        /**
                         * @event Player#controlsdisabled
                         * @type {EventTarget~Event}
                         */
                        this.trigger('controlsdisabled');

                        if (!this.usingNativeControls()) {
                            this.removeTechControlsListeners_();
                        }
                    }
                }
                return;
            }
            return !!this.controls_;
        };

        /**
         * Toggle native controls on/off. Native controls are the controls built into
         * devices (e.g. default iPhone controls), Flash, or other techs
         * (e.g. Vimeo Controls)
         * **This should only be set by the current tech, because only the tech knows
         * if it can support native controls**
         *
         * @fires Player#usingnativecontrols
         * @fires Player#usingcustomcontrols
         *
         * @param {boolean} [bool]
         *        - true to turn native controls on
         *        - false to turn native controls off
         *
         * @return {boolean}
         *         The current value of native controls when getting
         */


        Player.prototype.usingNativeControls = function usingNativeControls(bool) {
            if (bool !== undefined) {
                bool = !!bool;

                // Don't trigger a change event unless it actually changed
                if (this.usingNativeControls_ !== bool) {
                    this.usingNativeControls_ = bool;
                    if (bool) {
                        this.addClass('vjs-using-native-controls');

                        /**
                         * player is using the native device controls
                         *
                         * @event Player#usingnativecontrols
                         * @type {EventTarget~Event}
                         */
                        this.trigger('usingnativecontrols');
                    } else {
                        this.removeClass('vjs-using-native-controls');

                        /**
                         * player is using the custom HTML controls
                         *
                         * @event Player#usingcustomcontrols
                         * @type {EventTarget~Event}
                         */
                        this.trigger('usingcustomcontrols');
                    }
                }
                return;
            }
            return !!this.usingNativeControls_;
        };

        /**
         * Set or get the current MediaError
         *
         * @fires Player#error
         *
         * @param  {MediaError|string|number} [err]
         *         A MediaError or a string/number to be turned
         *         into a MediaError
         *
         * @return {MediaError|null}
         *         The current MediaError when getting (or null)
         */


        Player.prototype.error = function error(err) {
            if (err === undefined) {
                return this.error_ || null;
            }

            // restoring to default
            if (err === null) {
                this.error_ = err;
                this.removeClass('vjs-error');
                if (this.errorDisplay) {
                    this.errorDisplay.close();
                }
                return;
            }

            this.error_ = new MediaError(err);

            // add the vjs-error classname to the player
            this.addClass('vjs-error');

            // log the name of the error type and any message
            // ie8 just logs "[object object]" if you just log the error object
            log$1.error('(CODE:' + this.error_.code + ' ' + MediaError.errorTypes[this.error_.code] + ')', this.error_.message, this.error_);

            /**
             * @event Player#error
             * @type {EventTarget~Event}
             */
            this.trigger('error');

            return;
        };

        /**
         * Report user activity
         *
         * @param {Object} event
         *        Event object
         */


        Player.prototype.reportUserActivity = function reportUserActivity(event) {
            this.userActivity_ = true;
        };

        /**
         * Get/set if user is active
         *
         * @fires Player#useractive
         * @fires Player#userinactive
         *
         * @param {boolean} [bool]
         *        - true if the user is active
         *        - false if the user is inactive
         *
         * @return {boolean}
         *         The current value of userActive when getting
         */


        Player.prototype.userActive = function userActive(bool) {
            if (bool !== undefined) {
                bool = !!bool;
                if (bool !== this.userActive_) {
                    this.userActive_ = bool;
                    if (bool) {
                        // If the user was inactive and is now active we want to reset the
                        // inactivity timer
                        this.userActivity_ = true;
                        this.removeClass('vjs-user-inactive');
                        this.addClass('vjs-user-active');
                        /**
                         * @event Player#useractive
                         * @type {EventTarget~Event}
                         */
                        this.trigger('useractive');
                    } else {
                        // We're switching the state to inactive manually, so erase any other
                        // activity
                        this.userActivity_ = false;

                        // Chrome/Safari/IE have bugs where when you change the cursor it can
                        // trigger a mousemove event. This causes an issue when you're hiding
                        // the cursor when the user is inactive, and a mousemove signals user
                        // activity. Making it impossible to go into inactive mode. Specifically
                        // this happens in fullscreen when we really need to hide the cursor.
                        //
                        // When this gets resolved in ALL browsers it can be removed
                        // https://code.google.com/p/chromium/issues/detail?id=103041
                        if (this.tech_) {
                            this.tech_.one('mousemove', function (e) {
                                e.stopPropagation();
                                e.preventDefault();
                            });
                        }

                        this.removeClass('vjs-user-active');
                        this.addClass('vjs-user-inactive');
                        /**
                         * @event Player#userinactive
                         * @type {EventTarget~Event}
                         */
                        this.trigger('userinactive');
                    }
                }
                return;
            }
            return this.userActive_;
        };

        /**
         * Listen for user activity based on timeout value
         *
         * @private
         */


        Player.prototype.listenForUserActivity_ = function listenForUserActivity_() {
            var mouseInProgress = void 0;
            var lastMoveX = void 0;
            var lastMoveY = void 0;
            var handleActivity = bind(this, this.reportUserActivity);

            var handleMouseMove = function handleMouseMove(e) {
                // #1068 - Prevent mousemove spamming
                // Chrome Bug: https://code.google.com/p/chromium/issues/detail?id=366970
                if (e.screenX !== lastMoveX || e.screenY !== lastMoveY) {
                    lastMoveX = e.screenX;
                    lastMoveY = e.screenY;
                    handleActivity();
                }
            };

            var handleMouseDown = function handleMouseDown() {
                handleActivity();
                // For as long as the they are touching the device or have their mouse down,
                // we consider them active even if they're not moving their finger or mouse.
                // So we want to continue to update that they are active
                this.clearInterval(mouseInProgress);
                // Setting userActivity=true now and setting the interval to the same time
                // as the activityCheck interval (250) should ensure we never miss the
                // next activityCheck
                mouseInProgress = this.setInterval(handleActivity, 250);
            };

            var handleMouseUp = function handleMouseUp(event) {
                handleActivity();
                // Stop the interval that maintains activity if the mouse/touch is down
                this.clearInterval(mouseInProgress);
            };

            // Any mouse movement will be considered user activity
            this.on('mousedown', handleMouseDown);
            this.on('mousemove', handleMouseMove);
            this.on('mouseup', handleMouseUp);

            // Listen for keyboard navigation
            // Shouldn't need to use inProgress interval because of key repeat
            this.on('keydown', handleActivity);
            this.on('keyup', handleActivity);

            // Run an interval every 250 milliseconds instead of stuffing everything into
            // the mousemove/touchmove function itself, to prevent performance degradation.
            // `this.reportUserActivity` simply sets this.userActivity_ to true, which
            // then gets picked up by this loop
            // http://ejohn.org/blog/learning-from-twitter/
            var inactivityTimeout = void 0;

            this.setInterval(function () {
                // Check to see if mouse/touch activity has happened
                if (this.userActivity_) {
                    // Reset the activity tracker
                    this.userActivity_ = false;

                    // If the user state was inactive, set the state to active
                    this.userActive(true);

                    // Clear any existing inactivity timeout to start the timer over
                    this.clearTimeout(inactivityTimeout);

                    var timeout = this.options_.inactivityTimeout;

                    if (timeout > 0) {
                        // In <timeout> milliseconds, if no more activity has occurred the
                        // user will be considered inactive
                        inactivityTimeout = this.setTimeout(function () {
                            // Protect against the case where the inactivityTimeout can trigger just
                            // before the next user activity is picked up by the activity check loop
                            // causing a flicker
                            if (!this.userActivity_) {
                                this.userActive(false);
                            }
                        }, timeout);
                    }
                }
            }, 250);
        };

        /**
         * Gets or sets the current playback rate. A playback rate of
         * 1.0 represents normal speed and 0.5 would indicate half-speed
         * playback, for instance.
         *
         * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-playbackrate
         *
         * @param {number} [rate]
         *       New playback rate to set.
         *
         * @return {number}
         *         The current playback rate when getting or 1.0
         */


        Player.prototype.playbackRate = function playbackRate(rate) {
            if (rate !== undefined) {
                this.techCall_('setPlaybackRate', rate);
                return;
            }

            if (this.tech_ && this.tech_.featuresPlaybackRate) {
                return this.techGet_('playbackRate');
            }
            return 1.0;
        };

        /**
         * Gets or sets the current default playback rate. A default playback rate of
         * 1.0 represents normal speed and 0.5 would indicate half-speed playback, for instance.
         * defaultPlaybackRate will only represent what the intial playbackRate of a video was, not
         * not the current playbackRate.
         *
         * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-defaultplaybackrate
         *
         * @param {number} [rate]
         *       New default playback rate to set.
         *
         * @return {number|Player}
         *         - The default playback rate when getting or 1.0
         *         - the player when setting
         */


        Player.prototype.defaultPlaybackRate = function defaultPlaybackRate(rate) {
            if (rate !== undefined) {
                return this.techCall_('setDefaultPlaybackRate', rate);
            }

            if (this.tech_ && this.tech_.featuresPlaybackRate) {
                return this.techGet_('defaultPlaybackRate');
            }
            return 1.0;
        };

        /**
         * Gets or sets the audio flag
         *
         * @param {boolean} bool
         *        - true signals that this is an audio player
         *        - false signals that this is not an audio player
         *
         * @return {boolean}
         *         The current value of isAudio when getting
         */


        Player.prototype.isAudio = function isAudio(bool) {
            if (bool !== undefined) {
                this.isAudio_ = !!bool;
                return;
            }

            return !!this.isAudio_;
        };

        /**
         * A helper method for adding a {@link TextTrack} to our
         * {@link TextTrackList}.
         *
         * In addition to the W3C settings we allow adding additional info through options.
         *
         * @see http://www.w3.org/html/wg/drafts/html/master/embedded-content-0.html#dom-media-addtexttrack
         *
         * @param {string} [kind]
         *        the kind of TextTrack you are adding
         *
         * @param {string} [label]
         *        the label to give the TextTrack label
         *
         * @param {string} [language]
         *        the language to set on the TextTrack
         *
         * @return {TextTrack|undefined}
         *         the TextTrack that was added or undefined
         *         if there is no tech
         */


        Player.prototype.addTextTrack = function addTextTrack(kind, label, language) {
            if (this.tech_) {
                return this.tech_.addTextTrack(kind, label, language);
            }
        };

        /**
         * Create a remote {@link TextTrack} and an {@link HTMLTrackElement}. It will
         * automatically removed from the video element whenever the source changes, unless
         * manualCleanup is set to false.
         *
         * @param {Object} options
         *        Options to pass to {@link HTMLTrackElement} during creation. See
         *        {@link HTMLTrackElement} for object properties that you should use.
         *
         * @param {boolean} [manualCleanup=true] if set to false, the TextTrack will be
         *
         * @return {HtmlTrackElement}
         *         the HTMLTrackElement that was created and added
         *         to the HtmlTrackElementList and the remote
         *         TextTrackList
         *
         * @deprecated The default value of the "manualCleanup" parameter will default
         *             to "false" in upcoming versions of Video.js
         */


        Player.prototype.addRemoteTextTrack = function addRemoteTextTrack(options, manualCleanup) {
            if (this.tech_) {
                return this.tech_.addRemoteTextTrack(options, manualCleanup);
            }
        };

        /**
         * Remove a remote {@link TextTrack} from the respective
         * {@link TextTrackList} and {@link HtmlTrackElementList}.
         *
         * @param {Object} track
         *        Remote {@link TextTrack} to remove
         *
         * @return {undefined}
         *         does not return anything
         */


        Player.prototype.removeRemoteTextTrack = function removeRemoteTextTrack() {
            var _ref3 = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {},
                _ref3$track = _ref3.track,
                track = _ref3$track === undefined ? arguments[0] : _ref3$track;

            // destructure the input into an object with a track argument, defaulting to arguments[0]
            // default the whole argument to an empty object if nothing was passed in

            if (this.tech_) {
                return this.tech_.removeRemoteTextTrack(track);
            }
        };

        /**
         * Gets available media playback quality metrics as specified by the W3C's Media
         * Playback Quality API.
         *
         * @see [Spec]{@link https://wicg.github.io/media-playback-quality}
         *
         * @return {Object|undefined}
         *         An object with supported media playback quality metrics or undefined if there
         *         is no tech or the tech does not support it.
         */


        Player.prototype.getVideoPlaybackQuality = function getVideoPlaybackQuality() {
            return this.techGet_('getVideoPlaybackQuality');
        };

        /**
         * Get video width
         *
         * @return {number}
         *         current video width
         */


        Player.prototype.videoWidth = function videoWidth() {
            return this.tech_ && this.tech_.videoWidth && this.tech_.videoWidth() || 0;
        };

        /**
         * Get video height
         *
         * @return {number}
         *         current video height
         */


        Player.prototype.videoHeight = function videoHeight() {
            return this.tech_ && this.tech_.videoHeight && this.tech_.videoHeight() || 0;
        };

        /**
         * The player's language code
         * NOTE: The language should be set in the player options if you want the
         * the controls to be built with a specific language. Changing the lanugage
         * later will not update controls text.
         *
         * @param {string} [code]
         *        the language code to set the player to
         *
         * @return {string}
         *         The current language code when getting
         */


        Player.prototype.language = function language(code) {
            if (code === undefined) {
                return this.language_;
            }

            this.language_ = String(code).toLowerCase();
        };

        /**
         * Get the player's language dictionary
         * Merge every time, because a newly added plugin might call videojs.addLanguage() at any time
         * Languages specified directly in the player options have precedence
         *
         * @return {Array}
         *         An array of of supported languages
         */


        Player.prototype.languages = function languages() {
            return mergeOptions(Player.prototype.options_.languages, this.languages_);
        };

        /**
         * returns a JavaScript object reperesenting the current track
         * information. **DOES not return it as JSON**
         *
         * @return {Object}
         *         Object representing the current of track info
         */


        Player.prototype.toJSON = function toJSON() {
            var options = mergeOptions(this.options_);
            var tracks = options.tracks;

            options.tracks = [];

            for (var i = 0; i < tracks.length; i++) {
                var track = tracks[i];

                // deep merge tracks and null out player so no circular references
                track = mergeOptions(track);
                track.player = undefined;
                options.tracks[i] = track;
            }

            return options;
        };

        /**
         * Creates a simple modal dialog (an instance of the {@link ModalDialog}
         * component) that immediately overlays the player with arbitrary
         * content and removes itself when closed.
         *
         * @param {string|Function|Element|Array|null} content
         *        Same as {@link ModalDialog#content}'s param of the same name.
         *        The most straight-forward usage is to provide a string or DOM
         *        element.
         *
         * @param {Object} [options]
         *        Extra options which will be passed on to the {@link ModalDialog}.
         *
         * @return {ModalDialog}
         *         the {@link ModalDialog} that was created
         */


        Player.prototype.createModal = function createModal(content, options) {
            var _this7 = this;

            options = options || {};
            options.content = content || '';

            var modal = new ModalDialog(this, options);

            this.addChild(modal);
            modal.on('dispose', function () {
                _this7.removeChild(modal);
            });

            modal.open();
            return modal;
        };

        /**
         * Gets tag settings
         *
         * @param {Element} tag
         *        The player tag
         *
         * @return {Object}
         *         An object containing all of the settings
         *         for a player tag
         */


        Player.getTagSettings = function getTagSettings(tag) {
            var baseOptions = {
                sources: [],
                tracks: []
            };

            var tagOptions = getAttributes(tag);
            var dataSetup = tagOptions['data-setup'];

            if (hasClass(tag, 'vjs-fluid')) {
                tagOptions.fluid = true;
            }

            // Check if data-setup attr exists.
            if (dataSetup !== null) {
                // Parse options JSON
                // If empty string, make it a parsable json object.
                var _safeParseTuple = tuple(dataSetup || '{}'),
                    err = _safeParseTuple[0],
                    data = _safeParseTuple[1];

                if (err) {
                    log$1.error(err);
                }
                assign(tagOptions, data);
            }

            assign(baseOptions, tagOptions);

            // Get tag children settings
            if (tag.hasChildNodes()) {
                var children = tag.childNodes;

                for (var i = 0, j = children.length; i < j; i++) {
                    var child = children[i];
                    // Change case needed: http://ejohn.org/blog/nodename-case-sensitivity/
                    var childName = child.nodeName.toLowerCase();

                    if (childName === 'source') {
                        baseOptions.sources.push(getAttributes(child));
                    } else if (childName === 'track') {
                        baseOptions.tracks.push(getAttributes(child));
                    }
                }
            }

            return baseOptions;
        };

        /**
         * Determine wether or not flexbox is supported
         *
         * @return {boolean}
         *         - true if flexbox is supported
         *         - false if flexbox is not supported
         */


        Player.prototype.flexNotSupported_ = function flexNotSupported_() {
            var elem = document_1.createElement('i');

            // Note: We don't actually use flexBasis (or flexOrder), but it's one of the more
            // common flex features that we can rely on when checking for flex support.
            return !('flexBasis' in elem.style || 'webkitFlexBasis' in elem.style || 'mozFlexBasis' in elem.style || 'msFlexBasis' in elem.style ||
            // IE10-specific (2012 flex spec)
            'msFlexOrder' in elem.style);
        };

        return Player;
    }(Component);

    /**
     * Get the {@link VideoTrackList}
     * @link https://html.spec.whatwg.org/multipage/embedded-content.html#videotracklist
     *
     * @return {VideoTrackList}
     *         the current video track list
     *
     * @method Player.prototype.videoTracks
     */

    /**
     * Get the {@link AudioTrackList}
     * @link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotracklist
     *
     * @return {AudioTrackList}
     *         the current audio track list
     *
     * @method Player.prototype.audioTracks
     */

    /**
     * Get the {@link TextTrackList}
     *
     * @link http://www.w3.org/html/wg/drafts/html/master/embedded-content-0.html#dom-media-texttracks
     *
     * @return {TextTrackList}
     *         the current text track list
     *
     * @method Player.prototype.textTracks
     */

    /**
     * Get the remote {@link TextTrackList}
     *
     * @return {TextTrackList}
     *         The current remote text track list
     *
     * @method Player.prototype.remoteTextTracks
     */

    /**
     * Get the remote {@link HtmlTrackElementList} tracks.
     *
     * @return {HtmlTrackElementList}
     *         The current remote text track element list
     *
     * @method Player.prototype.remoteTextTrackEls
     */

    ALL.names.forEach(function (name$$1) {
        var props = ALL[name$$1];

        Player.prototype[props.getterName] = function () {
            if (this.tech_) {
                return this.tech_[props.getterName]();
            }

            // if we have not yet loadTech_, we create {video,audio,text}Tracks_
            // these will be passed to the tech during loading
            this[props.privateName] = this[props.privateName] || new props.ListClass();
            return this[props.privateName];
        };
    });

    /**
     * Global player list
     *
     * @type {Object}
     */
    Player.players = {};

    var navigator$1 = window_1.navigator;

    /*
     * Player instance options, surfaced using options
     * options = Player.prototype.options_
     * Make changes in options, not here.
     *
     * @type {Object}
     * @private
     */
    Player.prototype.options_ = {
        // Default order of fallback technology
        techOrder: Tech.defaultTechOrder_,

        html5: {},
        flash: {},

        // default inactivity timeout
        inactivityTimeout: 2000,

        // default playback rates
        playbackRates: [],
        // Add playback rate selection by adding rates
        // 'playbackRates': [0.5, 1, 1.5, 2],

        // Included control sets
        children: ['mediaLoader', 'posterImage', 'textTrackDisplay', 'loadingSpinner', 'bigPlayButton', 'controlBar', 'errorDisplay', 'textTrackSettings'],

        language: navigator$1 && (navigator$1.languages && navigator$1.languages[0] || navigator$1.userLanguage || navigator$1.language) || 'en',

        // locales and their language translations
        languages: {},

        // Default message to show when a video cannot be played.
        notSupportedMessage: 'No compatible source was found for this media.'
    };

    [
        /**
         * Returns whether or not the player is in the "ended" state.
         *
         * @return {Boolean} True if the player is in the ended state, false if not.
         * @method Player#ended
         */
        'ended',
        /**
         * Returns whether or not the player is in the "seeking" state.
         *
         * @return {Boolean} True if the player is in the seeking state, false if not.
         * @method Player#seeking
         */
        'seeking',
        /**
         * Returns the TimeRanges of the media that are currently available
         * for seeking to.
         *
         * @return {TimeRanges} the seekable intervals of the media timeline
         * @method Player#seekable
         */
        'seekable',
        /**
         * Returns the current state of network activity for the element, from
         * the codes in the list below.
         * - NETWORK_EMPTY (numeric value 0)
         *   The element has not yet been initialised. All attributes are in
         *   their initial states.
         * - NETWORK_IDLE (numeric value 1)
         *   The element's resource selection algorithm is active and has
         *   selected a resource, but it is not actually using the network at
         *   this time.
         * - NETWORK_LOADING (numeric value 2)
         *   The user agent is actively trying to download data.
         * - NETWORK_NO_SOURCE (numeric value 3)
         *   The element's resource selection algorithm is active, but it has
         *   not yet found a resource to use.
         *
         * @see https://html.spec.whatwg.org/multipage/embedded-content.html#network-states
         * @return {number} the current network activity state
         * @method Player#networkState
         */
        'networkState',
        /**
         * Returns a value that expresses the current state of the element
         * with respect to rendering the current playback position, from the
         * codes in the list below.
         * - HAVE_NOTHING (numeric value 0)
         *   No information regarding the media resource is available.
         * - HAVE_METADATA (numeric value 1)
         *   Enough of the resource has been obtained that the duration of the
         *   resource is available.
         * - HAVE_CURRENT_DATA (numeric value 2)
         *   Data for the immediate current playback position is available.
         * - HAVE_FUTURE_DATA (numeric value 3)
         *   Data for the immediate current playback position is available, as
         *   well as enough data for the user agent to advance the current
         *   playback position in the direction of playback.
         * - HAVE_ENOUGH_DATA (numeric value 4)
         *   The user agent estimates that enough data is available for
         *   playback to proceed uninterrupted.
         *
         * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-readystate
         * @return {number} the current playback rendering state
         * @method Player#readyState
         */
        'readyState'].forEach(function (fn) {
        Player.prototype[fn] = function () {
            return this.techGet_(fn);
        };
    });

    TECH_EVENTS_RETRIGGER.forEach(function (event) {
        Player.prototype['handleTech' + toTitleCase(event) + '_'] = function () {
            return this.trigger(event);
        };
    });

    /**
     * Fired when the player has initial duration and dimension information
     *
     * @event Player#loadedmetadata
     * @type {EventTarget~Event}
     */

    /**
     * Fired when the player has downloaded data at the current playback position
     *
     * @event Player#loadeddata
     * @type {EventTarget~Event}
     */

    /**
     * Fired when the current playback position has changed *
     * During playback this is fired every 15-250 milliseconds, depending on the
     * playback technology in use.
     *
     * @event Player#timeupdate
     * @type {EventTarget~Event}
     */

    /**
     * Fired when the volume changes
     *
     * @event Player#volumechange
     * @type {EventTarget~Event}
     */

    /**
     * Reports whether or not a player has a plugin available.
     *
     * This does not report whether or not the plugin has ever been initialized
     * on this player. For that, [usingPlugin]{@link Player#usingPlugin}.
     *
     * @method Player#hasPlugin
     * @param  {string}  name
     *         The name of a plugin.
     *
     * @return {boolean}
     *         Whether or not this player has the requested plugin available.
     */

    /**
     * Reports whether or not a player is using a plugin by name.
     *
     * For basic plugins, this only reports whether the plugin has _ever_ been
     * initialized on this player.
     *
     * @method Player#usingPlugin
     * @param  {string} name
     *         The name of a plugin.
     *
     * @return {boolean}
     *         Whether or not this player is using the requested plugin.
     */

    Component.registerComponent('Player', Player);

    /**
     * @file plugin.js
     */
    /**
     * The base plugin name.
     *
     * @private
     * @constant
     * @type {string}
     */
    var BASE_PLUGIN_NAME = 'plugin';

    /**
     * The key on which a player's active plugins cache is stored.
     *
     * @private
     * @constant
     * @type     {string}
     */
    var PLUGIN_CACHE_KEY = 'activePlugins_';

    /**
     * Stores registered plugins in a private space.
     *
     * @private
     * @type    {Object}
     */
    var pluginStorage = {};

    /**
     * Reports whether or not a plugin has been registered.
     *
     * @private
     * @param   {string} name
     *          The name of a plugin.
     *
     * @returns {boolean}
     *          Whether or not the plugin has been registered.
     */
    var pluginExists = function pluginExists(name) {
        return pluginStorage.hasOwnProperty(name);
    };

    /**
     * Get a single registered plugin by name.
     *
     * @private
     * @param   {string} name
     *          The name of a plugin.
     *
     * @returns {Function|undefined}
     *          The plugin (or undefined).
     */
    var getPlugin = function getPlugin(name) {
        return pluginExists(name) ? pluginStorage[name] : undefined;
    };

    /**
     * Marks a plugin as "active" on a player.
     *
     * Also, ensures that the player has an object for tracking active plugins.
     *
     * @private
     * @param   {Player} player
     *          A Video.js player instance.
     *
     * @param   {string} name
     *          The name of a plugin.
     */
    var markPluginAsActive = function markPluginAsActive(player, name) {
        player[PLUGIN_CACHE_KEY] = player[PLUGIN_CACHE_KEY] || {};
        player[PLUGIN_CACHE_KEY][name] = true;
    };

    /**
     * Triggers a pair of plugin setup events.
     *
     * @private
     * @param  {Player} player
     *         A Video.js player instance.
     *
     * @param  {Plugin~PluginEventHash} hash
     *         A plugin event hash.
     *
     * @param  {Boolean} [before]
     *         If true, prefixes the event name with "before". In other words,
     *         use this to trigger "beforepluginsetup" instead of "pluginsetup".
     */
    var triggerSetupEvent = function triggerSetupEvent(player, hash, before) {
        var eventName = (before ? 'before' : '') + 'pluginsetup';

        player.trigger(eventName, hash);
        player.trigger(eventName + ':' + hash.name, hash);
    };

    /**
     * Takes a basic plugin function and returns a wrapper function which marks
     * on the player that the plugin has been activated.
     *
     * @private
     * @param   {string} name
     *          The name of the plugin.
     *
     * @param   {Function} plugin
     *          The basic plugin.
     *
     * @returns {Function}
     *          A wrapper function for the given plugin.
     */
    var createBasicPlugin = function createBasicPlugin(name, plugin) {
        var basicPluginWrapper = function basicPluginWrapper() {

            // We trigger the "beforepluginsetup" and "pluginsetup" events on the player
            // regardless, but we want the hash to be consistent with the hash provided
            // for advanced plugins.
            //
            // The only potentially counter-intuitive thing here is the `instance` in
            // the "pluginsetup" event is the value returned by the `plugin` function.
            triggerSetupEvent(this, { name: name, plugin: plugin, instance: null }, true);

            var instance = plugin.apply(this, arguments);

            markPluginAsActive(this, name);
            triggerSetupEvent(this, { name: name, plugin: plugin, instance: instance });

            return instance;
        };

        Object.keys(plugin).forEach(function (prop) {
            basicPluginWrapper[prop] = plugin[prop];
        });

        return basicPluginWrapper;
    };

    /**
     * Takes a plugin sub-class and returns a factory function for generating
     * instances of it.
     *
     * This factory function will replace itself with an instance of the requested
     * sub-class of Plugin.
     *
     * @private
     * @param   {string} name
     *          The name of the plugin.
     *
     * @param   {Plugin} PluginSubClass
     *          The advanced plugin.
     *
     * @returns {Function}
     */
    var createPluginFactory = function createPluginFactory(name, PluginSubClass) {

        // Add a `name` property to the plugin prototype so that each plugin can
        // refer to itself by name.
        PluginSubClass.prototype.name = name;

        return function () {
            triggerSetupEvent(this, { name: name, plugin: PluginSubClass, instance: null }, true);

            for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
                args[_key] = arguments[_key];
            }

            var instance = new (Function.prototype.bind.apply(PluginSubClass, [null].concat([this].concat(args))))();

            // The plugin is replaced by a function that returns the current instance.
            this[name] = function () {
                return instance;
            };

            triggerSetupEvent(this, instance.getEventHash());

            return instance;
        };
    };

    /**
     * Parent class for all advanced plugins.
     *
     * @mixes   module:evented~EventedMixin
     * @mixes   module:stateful~StatefulMixin
     * @fires   Player#beforepluginsetup
     * @fires   Player#beforepluginsetup:$name
     * @fires   Player#pluginsetup
     * @fires   Player#pluginsetup:$name
     * @listens Player#dispose
     * @throws  {Error}
     *          If attempting to instantiate the base {@link Plugin} class
     *          directly instead of via a sub-class.
     */

    var Plugin = function () {

        /**
         * Creates an instance of this class.
         *
         * Sub-classes should call `super` to ensure plugins are properly initialized.
         *
         * @param {Player} player
         *        A Video.js player instance.
         */
        function Plugin(player) {
            classCallCheck(this, Plugin);

            if (this.constructor === Plugin) {
                throw new Error('Plugin must be sub-classed; not directly instantiated.');
            }

            this.player = player;

            // Make this object evented, but remove the added `trigger` method so we
            // use the prototype version instead.
            evented(this);
            delete this.trigger;

            stateful(this, this.constructor.defaultState);
            markPluginAsActive(player, this.name);

            // Auto-bind the dispose method so we can use it as a listener and unbind
            // it later easily.
            this.dispose = bind(this, this.dispose);

            // If the player is disposed, dispose the plugin.
            player.on('dispose', this.dispose);
        }

        /**
         * Each event triggered by plugins includes a hash of additional data with
         * conventional properties.
         *
         * This returns that object or mutates an existing hash.
         *
         * @param   {Object} [hash={}]
         *          An object to be used as event an event hash.
         *
         * @returns {Plugin~PluginEventHash}
         *          An event hash object with provided properties mixed-in.
         */


        Plugin.prototype.getEventHash = function getEventHash() {
            var hash = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};

            hash.name = this.name;
            hash.plugin = this.constructor;
            hash.instance = this;
            return hash;
        };

        /**
         * Triggers an event on the plugin object and overrides
         * {@link module:evented~EventedMixin.trigger|EventedMixin.trigger}.
         *
         * @param   {string|Object} event
         *          An event type or an object with a type property.
         *
         * @param   {Object} [hash={}]
         *          Additional data hash to merge with a
         *          {@link Plugin~PluginEventHash|PluginEventHash}.
         *
         * @returns {boolean}
         *          Whether or not default was prevented.
         */


        Plugin.prototype.trigger = function trigger$$1(event) {
            var hash = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

            return trigger(this.eventBusEl_, event, this.getEventHash(hash));
        };

        /**
         * Handles "statechanged" events on the plugin. No-op by default, override by
         * subclassing.
         *
         * @abstract
         * @param    {Event} e
         *           An event object provided by a "statechanged" event.
         *
         * @param    {Object} e.changes
         *           An object describing changes that occurred with the "statechanged"
         *           event.
         */


        Plugin.prototype.handleStateChanged = function handleStateChanged(e) {};

        /**
         * Disposes a plugin.
         *
         * Subclasses can override this if they want, but for the sake of safety,
         * it's probably best to subscribe the "dispose" event.
         *
         * @fires Plugin#dispose
         */


        Plugin.prototype.dispose = function dispose() {
            var name = this.name,
                player = this.player;

            /**
             * Signals that a advanced plugin is about to be disposed.
             *
             * @event Plugin#dispose
             * @type  {EventTarget~Event}
             */

            this.trigger('dispose');
            this.off();
            player.off('dispose', this.dispose);

            // Eliminate any possible sources of leaking memory by clearing up
            // references between the player and the plugin instance and nulling out
            // the plugin's state and replacing methods with a function that throws.
            player[PLUGIN_CACHE_KEY][name] = false;
            this.player = this.state = null;

            // Finally, replace the plugin name on the player with a new factory
            // function, so that the plugin is ready to be set up again.
            player[name] = createPluginFactory(name, pluginStorage[name]);
        };

        /**
         * Determines if a plugin is a basic plugin (i.e. not a sub-class of `Plugin`).
         *
         * @param   {string|Function} plugin
         *          If a string, matches the name of a plugin. If a function, will be
         *          tested directly.
         *
         * @returns {boolean}
         *          Whether or not a plugin is a basic plugin.
         */


        Plugin.isBasic = function isBasic(plugin) {
            var p = typeof plugin === 'string' ? getPlugin(plugin) : plugin;

            return typeof p === 'function' && !Plugin.prototype.isPrototypeOf(p.prototype);
        };

        /**
         * Register a Video.js plugin.
         *
         * @param   {string} name
         *          The name of the plugin to be registered. Must be a string and
         *          must not match an existing plugin or a method on the `Player`
         *          prototype.
         *
         * @param   {Function} plugin
         *          A sub-class of `Plugin` or a function for basic plugins.
         *
         * @returns {Function}
         *          For advanced plugins, a factory function for that plugin. For
         *          basic plugins, a wrapper function that initializes the plugin.
         */


        Plugin.registerPlugin = function registerPlugin(name, plugin) {
            if (typeof name !== 'string') {
                throw new Error('Illegal plugin name, "' + name + '", must be a string, was ' + (typeof name === 'undefined' ? 'undefined' : _typeof(name)) + '.');
            }

            if (pluginExists(name)) {
                log$1.warn('A plugin named "' + name + '" already exists. You may want to avoid re-registering plugins!');
            } else if (Player.prototype.hasOwnProperty(name)) {
                throw new Error('Illegal plugin name, "' + name + '", cannot share a name with an existing player method!');
            }

            if (typeof plugin !== 'function') {
                throw new Error('Illegal plugin for "' + name + '", must be a function, was ' + (typeof plugin === 'undefined' ? 'undefined' : _typeof(plugin)) + '.');
            }

            pluginStorage[name] = plugin;

            // Add a player prototype method for all sub-classed plugins (but not for
            // the base Plugin class).
            if (name !== BASE_PLUGIN_NAME) {
                if (Plugin.isBasic(plugin)) {
                    Player.prototype[name] = createBasicPlugin(name, plugin);
                } else {
                    Player.prototype[name] = createPluginFactory(name, plugin);
                }
            }

            return plugin;
        };

        /**
         * De-register a Video.js plugin.
         *
         * @param {string} name
         *        The name of the plugin to be deregistered.
         */


        Plugin.deregisterPlugin = function deregisterPlugin(name) {
            if (name === BASE_PLUGIN_NAME) {
                throw new Error('Cannot de-register base plugin.');
            }
            if (pluginExists(name)) {
                delete pluginStorage[name];
                delete Player.prototype[name];
            }
        };

        /**
         * Gets an object containing multiple Video.js plugins.
         *
         * @param   {Array} [names]
         *          If provided, should be an array of plugin names. Defaults to _all_
         *          plugin names.
         *
         * @returns {Object|undefined}
         *          An object containing plugin(s) associated with their name(s) or
         *          `undefined` if no matching plugins exist).
         */


        Plugin.getPlugins = function getPlugins() {
            var names = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : Object.keys(pluginStorage);

            var result = void 0;

            names.forEach(function (name) {
                var plugin = getPlugin(name);

                if (plugin) {
                    result = result || {};
                    result[name] = plugin;
                }
            });

            return result;
        };

        /**
         * Gets a plugin's version, if available
         *
         * @param   {string} name
         *          The name of a plugin.
         *
         * @returns {string}
         *          The plugin's version or an empty string.
         */


        Plugin.getPluginVersion = function getPluginVersion(name) {
            var plugin = getPlugin(name);

            return plugin && plugin.VERSION || '';
        };

        return Plugin;
    }();

    /**
     * Gets a plugin by name if it exists.
     *
     * @static
     * @method   getPlugin
     * @memberOf Plugin
     * @param    {string} name
     *           The name of a plugin.
     *
     * @returns  {Function|undefined}
     *           The plugin (or `undefined`).
     */


    Plugin.getPlugin = getPlugin;

    /**
     * The name of the base plugin class as it is registered.
     *
     * @type {string}
     */
    Plugin.BASE_PLUGIN_NAME = BASE_PLUGIN_NAME;

    Plugin.registerPlugin(BASE_PLUGIN_NAME, Plugin);

    /**
     * Documented in player.js
     *
     * @ignore
     */
    Player.prototype.usingPlugin = function (name) {
        return !!this[PLUGIN_CACHE_KEY] && this[PLUGIN_CACHE_KEY][name] === true;
    };

    /**
     * Documented in player.js
     *
     * @ignore
     */
    Player.prototype.hasPlugin = function (name) {
        return !!pluginExists(name);
    };

    /**
     * Signals that a plugin is about to be set up on a player.
     *
     * @event    Player#beforepluginsetup
     * @type     {Plugin~PluginEventHash}
     */

    /**
     * Signals that a plugin is about to be set up on a player - by name. The name
     * is the name of the plugin.
     *
     * @event    Player#beforepluginsetup:$name
     * @type     {Plugin~PluginEventHash}
     */

    /**
     * Signals that a plugin has just been set up on a player.
     *
     * @event    Player#pluginsetup
     * @type     {Plugin~PluginEventHash}
     */

    /**
     * Signals that a plugin has just been set up on a player - by name. The name
     * is the name of the plugin.
     *
     * @event    Player#pluginsetup:$name
     * @type     {Plugin~PluginEventHash}
     */

    /**
     * @typedef  {Object} Plugin~PluginEventHash
     *
     * @property {string} instance
     *           For basic plugins, the return value of the plugin function. For
     *           advanced plugins, the plugin instance on which the event is fired.
     *
     * @property {string} name
     *           The name of the plugin.
     *
     * @property {string} plugin
     *           For basic plugins, the plugin function. For advanced plugins, the
     *           plugin class/constructor.
     */

    /**
     * @file extend.js
     * @module extend
     */

    /**
     * A combination of node inherits and babel's inherits (after transpile).
     * Both work the same but node adds `super_` to the subClass
     * and Bable adds the superClass as __proto__. Both seem useful.
     *
     * @param {Object} subClass
     *        The class to inherit to
     *
     * @param {Object} superClass
     *        The class to inherit from
     *
     * @private
     */
    var _inherits = function _inherits(subClass, superClass) {
        if (typeof superClass !== 'function' && superClass !== null) {
            throw new TypeError('Super expression must either be null or a function, not ' + (typeof superClass === 'undefined' ? 'undefined' : _typeof(superClass)));
        }

        subClass.prototype = Object.create(superClass && superClass.prototype, {
            constructor: {
                value: subClass,
                enumerable: false,
                writable: true,
                configurable: true
            }
        });

        if (superClass) {
            // node
            subClass.super_ = superClass;
        }
    };

    /**
     * Function for subclassing using the same inheritance that
     * videojs uses internally
     *
     * @static
     * @const
     *
     * @param {Object} superClass
     *        The class to inherit from
     *
     * @param {Object} [subClassMethods={}]
     *        The class to inherit to
     *
     * @return {Object}
     *         The new object with subClassMethods that inherited superClass.
     */
    var extendFn = function extendFn(superClass) {
        var subClassMethods = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

        var subClass = function subClass() {
            superClass.apply(this, arguments);
        };

        var methods = {};

        if ((typeof subClassMethods === 'undefined' ? 'undefined' : _typeof(subClassMethods)) === 'object') {
            if (subClassMethods.constructor !== Object.prototype.constructor) {
                subClass = subClassMethods.constructor;
            }
            methods = subClassMethods;
        } else if (typeof subClassMethods === 'function') {
            subClass = subClassMethods;
        }

        _inherits(subClass, superClass);

        // Extend subObj's prototype with functions and other properties from props
        for (var name in methods) {
            if (methods.hasOwnProperty(name)) {
                subClass.prototype[name] = methods[name];
            }
        }

        return subClass;
    };

    /**
     * @file video.js
     * @module videojs
     */
// Include the built-in techs
// HTML5 Element Shim for IE8
    if (typeof HTMLVideoElement === 'undefined' && isReal()) {
        document_1.createElement('video');
        document_1.createElement('audio');
        document_1.createElement('track');
    }

    /**
     * Doubles as the main function for users to create a player instance and also
     * the main library object.
     * The `videojs` function can be used to initialize or retrieve a player.
     *
     * @param {string|Element} id
     *        Video element or video element ID
     *
     * @param {Object} [options]
     *        Optional options object for config/settings
     *
     * @param {Component~ReadyCallback} [ready]
     *        Optional ready callback
     *
     * @return {Player}
     *         A player instance
     */
    function videojs(id, options, ready) {
        var tag = void 0;

        // Allow for element or ID to be passed in
        // String ID
        if (typeof id === 'string') {
            var players = videojs.getPlayers();

            // Adjust for jQuery ID syntax
            if (id.indexOf('#') === 0) {
                id = id.slice(1);
            }

            // If a player instance has already been created for this ID return it.
            if (players[id]) {

                // If options or ready function are passed, warn
                if (options) {
                    log$1.warn('Player "' + id + '" is already initialised. Options will not be applied.');
                }

                if (ready) {
                    players[id].ready(ready);
                }

                return players[id];
            }

            // Otherwise get element for ID
            tag = $('#' + id);

            // ID is a media element
        } else {
            tag = id;
        }

        // Check for a useable element
        // re: nodeName, could be a box div also
        if (!tag || !tag.nodeName) {
            throw new TypeError('The element or ID supplied is not valid. (videojs)');
        }

        // Element may have a player attr referring to an already created player instance.
        // If so return that otherwise set up a new player below
        if (tag.player || Player.players[tag.playerId]) {
            return tag.player || Player.players[tag.playerId];
        }

        options = options || {};

        videojs.hooks('beforesetup').forEach(function (hookFunction) {
            var opts = hookFunction(tag, mergeOptions(options));

            if (!isObject(opts) || Array.isArray(opts)) {
                log$1.error('please return an object in beforesetup hooks');
                return;
            }

            options = mergeOptions(options, opts);
        });

        var PlayerComponent = Component.getComponent('Player');
        // If not, set up a new player
        var player = new PlayerComponent(tag, options, ready);

        videojs.hooks('setup').forEach(function (hookFunction) {
            return hookFunction(player);
        });

        return player;
    }

    /**
     * An Object that contains lifecycle hooks as keys which point to an array
     * of functions that are run when a lifecycle is triggered
     */
    videojs.hooks_ = {};

    /**
     * Get a list of hooks for a specific lifecycle
     * @function videojs.hooks
     *
     * @param {string} type
     *        the lifecyle to get hooks from
     *
     * @param {Function} [fn]
     *        Optionally add a hook to the lifecycle that your are getting.
     *
     * @return {Array}
     *         an array of hooks, or an empty array if there are none.
     */
    videojs.hooks = function (type, fn) {
        videojs.hooks_[type] = videojs.hooks_[type] || [];
        if (fn) {
            videojs.hooks_[type] = videojs.hooks_[type].concat(fn);
        }
        return videojs.hooks_[type];
    };

    /**
     * Add a function hook to a specific videojs lifecycle.
     *
     * @param {string} type
     *        the lifecycle to hook the function to.
     *
     * @param {Function|Function[]}
     *        The function or array of functions to attach.
     */
    videojs.hook = function (type, fn) {
        videojs.hooks(type, fn);
    };

    /**
     * Remove a hook from a specific videojs lifecycle.
     *
     * @param {string} type
     *        the lifecycle that the function hooked to
     *
     * @param {Function} fn
     *        The hooked function to remove
     *
     * @return {boolean}
     *         The function that was removed or undef
     */
    videojs.removeHook = function (type, fn) {
        var index = videojs.hooks(type).indexOf(fn);

        if (index <= -1) {
            return false;
        }

        videojs.hooks_[type] = videojs.hooks_[type].slice();
        videojs.hooks_[type].splice(index, 1);

        return true;
    };

// Add default styles
    if (window_1.VIDEOJS_NO_DYNAMIC_STYLE !== true && isReal()) {
        var style = $('.vjs-styles-defaults');

        if (!style) {
            style = createStyleElement('vjs-styles-defaults');
            var head = $('head');

            if (head) {
                head.insertBefore(style, head.firstChild);
            }
            setTextContent(style, '\n      .video-js {\n        width: 300px;\n        height: 150px;\n      }\n\n      .vjs-fluid {\n        padding-top: 56.25%\n      }\n    ');
        }
    }

// Run Auto-load players
// You have to wait at least once in case this script is loaded after your
// video in the DOM (weird behavior only with minified version)
    autoSetupTimeout(1, videojs);

    /**
     * Current software version. Follows semver.
     *
     * @type {string}
     */
    videojs.VERSION = version;

    /**
     * The global options object. These are the settings that take effect
     * if no overrides are specified when the player is created.
     *
     * @type {Object}
     */
    videojs.options = Player.prototype.options_;

    /**
     * Get an object with the currently created players, keyed by player ID
     *
     * @return {Object}
     *         The created players
     */
    videojs.getPlayers = function () {
        return Player.players;
    };

    /**
     * Expose players object.
     *
     * @memberOf videojs
     * @property {Object} players
     */
    videojs.players = Player.players;

    /**
     * Get a component class object by name
     *
     * @borrows Component.getComponent as videojs.getComponent
     */
    videojs.getComponent = Component.getComponent;

    /**
     * Register a component so it can referred to by name. Used when adding to other
     * components, either through addChild `component.addChild('myComponent')` or through
     * default children options  `{ children: ['myComponent'] }`.
     *
     * > NOTE: You could also just initialize the component before adding.
     * `component.addChild(new MyComponent());`
     *
     * @param {string} name
     *        The class name of the component
     *
     * @param {Component} comp
     *        The component class
     *
     * @return {Component}
     *         The newly registered component
     */
    videojs.registerComponent = function (name$$1, comp) {
        if (Tech.isTech(comp)) {
            log$1.warn('The ' + name$$1 + ' tech was registered as a component. It should instead be registered using videojs.registerTech(name, tech)');
        }

        Component.registerComponent.call(Component, name$$1, comp);
    };

    /**
     * Get a Tech class object by name
     *
     * @borrows Tech.getTech as videojs.getTech
     */
    videojs.getTech = Tech.getTech;

    /**
     * Register a Tech so it can referred to by name.
     * This is used in the tech order for the player.
     *
     * @borrows Tech.registerTech as videojs.registerTech
     */
    videojs.registerTech = Tech.registerTech;

    videojs.use = use;

    /**
     * A suite of browser and device tests from {@link browser}.
     *
     * @type {Object}
     * @private
     */
    videojs.browser = browser;

    /**
     * Whether or not the browser supports touch events. Included for backward
     * compatibility with 4.x, but deprecated. Use `videojs.browser.TOUCH_ENABLED`
     * instead going forward.
     *
     * @deprecated since version 5.0
     * @type {boolean}
     */
    videojs.TOUCH_ENABLED = TOUCH_ENABLED;

    /**
     * Subclass an existing class
     * Mimics ES6 subclassing with the `extend` keyword
     *
     * @borrows extend:extendFn as videojs.extend
     */
    videojs.extend = extendFn;

    /**
     * Merge two options objects recursively
     * Performs a deep merge like lodash.merge but **only merges plain objects**
     * (not arrays, elements, anything else)
     * Other values will be copied directly from the second object.
     *
     * @borrows merge-options:mergeOptions as videojs.mergeOptions
     */
    videojs.mergeOptions = mergeOptions;

    /**
     * Change the context (this) of a function
     *
     * > NOTE: as of v5.0 we require an ES5 shim, so you should use the native
     * `function() {}.bind(newContext);` instead of this.
     *
     * @borrows fn:bind as videojs.bind
     */
    videojs.bind = bind;

    /**
     * Register a Video.js plugin.
     *
     * @borrows plugin:registerPlugin as videojs.registerPlugin
     * @method registerPlugin
     *
     * @param  {string} name
     *         The name of the plugin to be registered. Must be a string and
     *         must not match an existing plugin or a method on the `Player`
     *         prototype.
     *
     * @param  {Function} plugin
     *         A sub-class of `Plugin` or a function for basic plugins.
     *
     * @return {Function}
     *         For advanced plugins, a factory function for that plugin. For
     *         basic plugins, a wrapper function that initializes the plugin.
     */
    videojs.registerPlugin = Plugin.registerPlugin;

    /**
     * Deprecated method to register a plugin with Video.js
     *
     * @deprecated
     *        videojs.plugin() is deprecated; use videojs.registerPlugin() instead
     *
     * @param {string} name
     *        The plugin name
     *
     * @param {Plugin|Function} plugin
     *         The plugin sub-class or function
     */
    videojs.plugin = function (name$$1, plugin) {
        log$1.warn('videojs.plugin() is deprecated; use videojs.registerPlugin() instead');
        return Plugin.registerPlugin(name$$1, plugin);
    };

    /**
     * Gets an object containing multiple Video.js plugins.
     *
     * @param  {Array} [names]
     *         If provided, should be an array of plugin names. Defaults to _all_
     *         plugin names.
     *
     * @return {Object|undefined}
     *         An object containing plugin(s) associated with their name(s) or
     *         `undefined` if no matching plugins exist).
     */
    videojs.getPlugins = Plugin.getPlugins;

    /**
     * Gets a plugin by name if it exists.
     *
     * @param  {string} name
     *         The name of a plugin.
     *
     * @return {Function|undefined}
     *         The plugin (or `undefined`).
     */
    videojs.getPlugin = Plugin.getPlugin;

    /**
     * Gets a plugin's version, if available
     *
     * @param  {string} name
     *         The name of a plugin.
     *
     * @return {string}
     *         The plugin's version or an empty string.
     */
    videojs.getPluginVersion = Plugin.getPluginVersion;

    /**
     * Adding languages so that they're available to all players.
     * Example: `videojs.addLanguage('es', { 'Hello': 'Hola' });`
     *
     * @param {string} code
     *        The language code or dictionary property
     *
     * @param {Object} data
     *        The data values to be translated
     *
     * @return {Object}
     *         The resulting language dictionary object
     */
    videojs.addLanguage = function (code, data) {
        var _mergeOptions;

        code = ('' + code).toLowerCase();

        videojs.options.languages = mergeOptions(videojs.options.languages, (_mergeOptions = {}, _mergeOptions[code] = data, _mergeOptions));

        return videojs.options.languages[code];
    };

    /**
     * Log messages
     *
     * @borrows log:log as videojs.log
     */
    videojs.log = log$1;

    /**
     * Creates an emulated TimeRange object.
     *
     * @borrows time-ranges:createTimeRanges as videojs.createTimeRange
     */
    /**
     * @borrows time-ranges:createTimeRanges as videojs.createTimeRanges
     */
    videojs.createTimeRange = videojs.createTimeRanges = createTimeRanges;

    /**
     * Format seconds as a time string, H:MM:SS or M:SS
     * Supplying a guide (in seconds) will force a number of leading zeros
     * to cover the length of the guide
     *
     * @borrows format-time:formatTime as videojs.formatTime
     */
    videojs.formatTime = formatTime;

    /**
     * Resolve and parse the elements of a URL
     *
     * @borrows url:parseUrl as videojs.parseUrl
     */
    videojs.parseUrl = parseUrl;

    /**
     * Returns whether the url passed is a cross domain request or not.
     *
     * @borrows url:isCrossOrigin as videojs.isCrossOrigin
     */
    videojs.isCrossOrigin = isCrossOrigin;

    /**
     * Event target class.
     *
     * @borrows EventTarget as videojs.EventTarget
     */
    videojs.EventTarget = EventTarget;

    /**
     * Add an event listener to element
     * It stores the handler function in a separate cache object
     * and adds a generic handler to the element's event,
     * along with a unique id (guid) to the element.
     *
     * @borrows events:on as videojs.on
     */
    videojs.on = on;

    /**
     * Trigger a listener only once for an event
     *
     * @borrows events:one as videojs.one
     */
    videojs.one = one;

    /**
     * Removes event listeners from an element
     *
     * @borrows events:off as videojs.off
     */
    videojs.off = off;

    /**
     * Trigger an event for an element
     *
     * @borrows events:trigger as videojs.trigger
     */
    videojs.trigger = trigger;

    /**
     * A cross-browser XMLHttpRequest wrapper. Here's a simple example:
     *
     * @param {Object} options
     *        settings for the request.
     *
     * @return {XMLHttpRequest|XDomainRequest}
     *         The request object.
     *
     * @see https://github.com/Raynos/xhr
     */
    videojs.xhr = xhr;

    /**
     * TextTrack class
     *
     * @borrows TextTrack as videojs.TextTrack
     */
    videojs.TextTrack = TextTrack;

    /**
     * export the AudioTrack class so that source handlers can create
     * AudioTracks and then add them to the players AudioTrackList
     *
     * @borrows AudioTrack as videojs.AudioTrack
     */
    videojs.AudioTrack = AudioTrack;

    /**
     * export the VideoTrack class so that source handlers can create
     * VideoTracks and then add them to the players VideoTrackList
     *
     * @borrows VideoTrack as videojs.VideoTrack
     */
    videojs.VideoTrack = VideoTrack;

    /**
     * Determines, via duck typing, whether or not a value is a DOM element.
     *
     * @borrows dom:isEl as videojs.isEl
     * @deprecated Use videojs.dom.isEl() instead
     */

    /**
     * Determines, via duck typing, whether or not a value is a text node.
     *
     * @borrows dom:isTextNode as videojs.isTextNode
     * @deprecated Use videojs.dom.isTextNode() instead
     */

    /**
     * Creates an element and applies properties.
     *
     * @borrows dom:createEl as videojs.createEl
     * @deprecated Use videojs.dom.createEl() instead
     */

    /**
     * Check if an element has a CSS class
     *
     * @borrows dom:hasElClass as videojs.hasClass
     * @deprecated Use videojs.dom.hasClass() instead
     */

    /**
     * Add a CSS class name to an element
     *
     * @borrows dom:addElClass as videojs.addClass
     * @deprecated Use videojs.dom.addClass() instead
     */

    /**
     * Remove a CSS class name from an element
     *
     * @borrows dom:removeElClass as videojs.removeClass
     * @deprecated Use videojs.dom.removeClass() instead
     */

    /**
     * Adds or removes a CSS class name on an element depending on an optional
     * condition or the presence/absence of the class name.
     *
     * @borrows dom:toggleElClass as videojs.toggleClass
     * @deprecated Use videojs.dom.toggleClass() instead
     */

    /**
     * Apply attributes to an HTML element.
     *
     * @borrows dom:setElAttributes as videojs.setAttribute
     * @deprecated Use videojs.dom.setAttributes() instead
     */

    /**
     * Get an element's attribute values, as defined on the HTML tag
     * Attributes are not the same as properties. They're defined on the tag
     * or with setAttribute (which shouldn't be used with HTML)
     * This will return true or false for boolean attributes.
     *
     * @borrows dom:getElAttributes as videojs.getAttributes
     * @deprecated Use videojs.dom.getAttributes() instead
     */

    /**
     * Empties the contents of an element.
     *
     * @borrows dom:emptyEl as videojs.emptyEl
     * @deprecated Use videojs.dom.emptyEl() instead
     */

    /**
     * Normalizes and appends content to an element.
     *
     * The content for an element can be passed in multiple types and
     * combinations, whose behavior is as follows:
     *
     * - String
     *   Normalized into a text node.
     *
     * - Element, TextNode
     *   Passed through.
     *
     * - Array
     *   A one-dimensional array of strings, elements, nodes, or functions (which
     *   return single strings, elements, or nodes).
     *
     * - Function
     *   If the sole argument, is expected to produce a string, element,
     *   node, or array.
     *
     * @borrows dom:appendContents as videojs.appendContet
     * @deprecated Use videojs.dom.appendContent() instead
     */

    /**
     * Normalizes and inserts content into an element; this is identical to
     * `appendContent()`, except it empties the element first.
     *
     * The content for an element can be passed in multiple types and
     * combinations, whose behavior is as follows:
     *
     * - String
     *   Normalized into a text node.
     *
     * - Element, TextNode
     *   Passed through.
     *
     * - Array
     *   A one-dimensional array of strings, elements, nodes, or functions (which
     *   return single strings, elements, or nodes).
     *
     * - Function
     *   If the sole argument, is expected to produce a string, element,
     *   node, or array.
     *
     * @borrows dom:insertContent as videojs.insertContent
     * @deprecated Use videojs.dom.insertContent() instead
     */
    ['isEl', 'isTextNode', 'createEl', 'hasClass', 'addClass', 'removeClass', 'toggleClass', 'setAttributes', 'getAttributes', 'emptyEl', 'appendContent', 'insertContent'].forEach(function (k) {
        videojs[k] = function () {
            log$1.warn('videojs.' + k + '() is deprecated; use videojs.dom.' + k + '() instead');
            return Dom[k].apply(null, arguments);
        };
    });

    /**
     * A safe getComputedStyle with an IE8 fallback.
     *
     * This is because in Firefox, if the player is loaded in an iframe with `display:none`,
     * then `getComputedStyle` returns `null`, so, we do a null-check to make sure
     * that the player doesn't break in these cases.
     * See https://bugzilla.mozilla.org/show_bug.cgi?id=548397 for more details.
     *
     * @borrows computed-style:computedStyle as videojs.computedStyle
     */
    videojs.computedStyle = computedStyle;

    /**
     * Export the Dom utilities for use in external plugins
     * and Tech's
     */
    videojs.dom = Dom;

    /**
     * Export the Url utilities for use in external plugins
     * and Tech's
     */
    videojs.url = Url;

    return videojs;

})));

!function(){!function(a){var b=a&&a.videojs;b&&(b.CDN_VERSION="6.2.8")}(window),function(a,b,c,d,e,f,g){b&&!1!==b.HELP_IMPROVE_VIDEOJS&&(e.random()>.01||(f=b.location,g=b.videojs||{},a.src="//www.google-analytics.com/__utm.gif?utmwv=5.4.2&utmac=UA-16505296-3&utmn=1&utmhn="+d(f.hostname)+"&utmsr="+b.screen.availWidth+"x"+b.screen.availHeight+"&utmul="+(c.language||c.userLanguage||"").toLowerCase()+"&utmr="+d(f.href)+"&utmp="+d(f.hostname+f.pathname)+"&utmcc=__utma%3D1."+e.floor(1e10*e.random())+".1.1.1.1%3B&utme=8(vjsv*cdnv)9("+g.VERSION+"*"+g.CDN_VERSION+")"))}(new Image,window,navigator,encodeURIComponent,Math)}();